#unix

main olive Jan 22, 2020, 2:15 AM

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no.. I'll try that

main olive Jan 22, 2020, 5:00 AM

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ok.. so I made the sh script to ssh into a bastion host

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but I need to ssh into another instance from there.. how do I add this to the sh script

main olive Jan 22, 2020, 5:32 AM

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would this work

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#! /bin/bash
eval ssh-agent $SHELL
# adding keys to ssh agent
ssh-add ~/.ssh/gcp_jump && ssh-add ~/.ssh/gcp_sourceinstance
ssh -A username@IP1 'ssh username@IP2'

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I got it :3

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yay me

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#! /bin/bash
# start ssh agent for the script
eval $(ssh-agent)
# add the ssh keys to agent
ssh-add ~/.ssh/gcp_jump && ssh-add ~/.ssh/gcp_sourceinstance
# use the Agent and Jump server
ssh -A -J username@bastionhost username@final_destinationIP

main olive Jan 23, 2020, 7:53 AM

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I want to allow egress traffic on private vm to be able to install packages

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what's the ip address I need to route to

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guess I need to set up a NAT gateway.. whatever that is

steel verge Jan 23, 2020, 9:13 AM

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What kind of IP does your server have?

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NAT means network address translation and comes into play when a server has for example a private IP, but needs to use a public or shared ip to connect to clients. Then the router translates between the two networks. It is also used to map devices within an internal network to the public internet. You can looks up SNAT, DNAT and PNAT and their differences.

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But I need more information there. @main olive

main olive Jan 23, 2020, 9:15 AM

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I have a private vm (with no external IP) on a VPC that I access through a bastion host.. the bastion host has an external IP

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I want to install stuff on my private vm.. for some reason I'm able to run apt install as root.. I have no clue how

steel verge Jan 23, 2020, 9:16 AM

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sudo apt install packagename

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you can also become root with your user password via sudo -i, if you are in the sudoers file

main olive Jan 23, 2020, 9:21 AM

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I'd like to allow all users to use apt install..

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I'd also like to find out how i'm able to install packages.. how is traffic going outside when I didn't configure it

steel verge Jan 23, 2020, 9:27 AM

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Add the users you wish to allow to use apt to the sudoers file, allowing that command only. Don't give a blank permission to become root

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username ALL = NOPASSWD : /usr/bin/apt , /usr/bin/aptitude

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something like that

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For the connectivity issue, try running ip route and check if has a default entry

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It should say something like default via 10.10.10.254 dev eth0 src 10.10.10.252 metric 202 IP will be different

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default route means "send all packages I don't know the destination of to that address"

main olive Jan 23, 2020, 9:41 AM

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I tried to run that.. it says no command called username

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with ip route I got this

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default via 10.0.254.1 dev eth0
10.0.254.1 dev eth0 scope link
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown

steel verge Jan 23, 2020, 9:44 AM

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You need to replace username with an actual username or %u for all users

main olive Jan 23, 2020, 9:44 AM

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ahh

steel verge Jan 23, 2020, 9:44 AM

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well, %u is the current user

main olive Jan 23, 2020, 9:44 AM

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wut

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I tried replacing with the actual username.. same thing.. command not found

steel verge Jan 23, 2020, 9:46 AM

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check where apt lives

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normally it should be in /usr/bin/apt

main olive Jan 23, 2020, 9:46 AM

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yeah looks like it

steel verge Jan 23, 2020, 9:47 AM

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Maybe it is the spaces: %u ALL=NOPASSWD:/usr/bin/apt,/usr/bin/aptitude

main olive Jan 23, 2020, 9:47 AM

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%u: no such job

steel verge Jan 23, 2020, 9:48 AM

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this is weird or I am stupid, because I have lines like this in my /etc/sudoers and it works

main olive Jan 23, 2020, 9:49 AM

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do you mean I need to add this line somewhere

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or do I run this as a command

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well I added it to the file.. hopefully it works

steel verge Jan 23, 2020, 9:50 AM

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You need to add it to your sudoers file

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/etc/sudoers

main olive Jan 23, 2020, 9:50 AM

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hmm still permissions denied

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I added it

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%u ALL=NOPASSWD:/usr/bin/apt,/usr/bin/aptitude

steel verge Jan 23, 2020, 9:51 AM

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You still need to type sudo and you also need to relog before it works

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or use su to switch to a user

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I just tried it on my raspi and it works fine 🙂

main olive Jan 23, 2020, 9:52 AM

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great it works

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I ran as .. sudo apt install

steel verge Jan 23, 2020, 9:53 AM

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yeah, now it should run without password

main olive Jan 23, 2020, 9:53 AM

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nicee

steel verge Jan 23, 2020, 9:53 AM

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anyway, about your connectivity issue: Try to run ping google.com and see if you get a response

main olive Jan 23, 2020, 9:53 AM

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I do

steel verge Jan 23, 2020, 9:54 AM

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then it is not a routing issue

main olive Jan 23, 2020, 9:54 AM

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I'm not sure why it's available externally

steel verge Jan 23, 2020, 9:54 AM

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NAT also works fine then

main olive Jan 23, 2020, 9:54 AM

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I didnt set up NAT

steel verge Jan 23, 2020, 9:54 AM

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no, the gateway does that

main olive Jan 23, 2020, 9:54 AM

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I mean.. it's a private vm with no external ip and I haven't allowed traffic

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so i'm wondering how it's routing

steel verge Jan 23, 2020, 9:54 AM

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Ok can you say again what the issue is there?

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maybe I misunderstood

main olive Jan 23, 2020, 9:55 AM

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it's a private VM (with only an internal IP) on a VPC.. and it's accessible from a bastion host

steel verge Jan 23, 2020, 9:55 AM

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VPC = Amazon? What's bastion?

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Sorry not familiar with aws

main olive Jan 23, 2020, 9:55 AM

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I was of the opinion it didn't allow any external traffic.. and was wondering how to set up NAT so i can install packages

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VPC virtual private cloud.. and im using GCP..

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bastion is a jump server

steel verge Jan 23, 2020, 9:59 AM

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But isn't that the point, that you can access your private vm via the bastion server?

main olive Jan 23, 2020, 9:59 AM

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yes.. and I can access it

steel verge Jan 23, 2020, 9:59 AM

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It shouldn't be accessible from the outside though

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without connecting to the bastion first

main olive Jan 23, 2020, 9:59 AM

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but I'm wondering how the private vm is allowing network traffic to install packages

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like what route is the traffic taking..

steel verge Jan 23, 2020, 9:59 AM

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always to the next gateway

main olive Jan 23, 2020, 10:00 AM

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ahh

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hmm

steel verge Jan 23, 2020, 10:00 AM

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Packages are sent to 10.0.254.1 in your case

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because that is the default route

main olive Jan 23, 2020, 10:00 AM

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even though I run the apt install from the private vm?

steel verge Jan 23, 2020, 10:00 AM

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I don't know what 10.0.254.1 is, but I assume it is some sort of gateway that then decides if it allows this traffic

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if you want to change the route, you need to change the default route

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but in networking, if a machine connects to the "outside", all incoming packages are allowed

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for that request

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Only if unsolicited packages come in, the firewall denies them if there are no other rules

main olive Jan 23, 2020, 10:02 AM

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ok.. 10.0.254.1 is the gateway on one subnet for this VPC

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I'm wondering how to easily copy local files to the private vm.. hmm

steel verge Jan 23, 2020, 10:03 AM

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use scp

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it is basically ssh-copy

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hence, scp

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scp local_file user@host:/home/or/other/path -P port

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You'll probably need to copy it to the bastion server first

main olive Jan 23, 2020, 10:09 AM

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hmm yeah.. probably some other way.. to do that

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but I'm wondering if there's a way to use CI/CD for this stuff

steel verge Jan 23, 2020, 10:10 AM

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are you using git? Can use a hook to achieve it

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I am using CD with my NAS and Pi to build my website

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after a commit, the NAS runs a bash script on my pi, which then runs Jekyll and uploads the files to my host

main olive Jan 23, 2020, 10:12 AM

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i'm using gitlab

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I have no clue what hook or Nas are

steel verge Jan 23, 2020, 10:14 AM

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NAS is just my network storage, disregard it, but hooks are functions in Git that allow you to fire scripts when specific events happen, like received files.

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Gitlab support them: https://docs.gitlab.com/ee/administration/server_hooks.html

Server hooks | GitLab

Documentation for GitLab Community Edition, GitLab Enterprise Edition, Omnibus GitLab, and GitLab Runner.

main olive Jan 23, 2020, 10:15 AM

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like.. received files where

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you mean like.. if I put a file in a certain place on git.. then it runs some script that copies it to the private vm?

steel verge Jan 23, 2020, 10:16 AM

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In a bare server side git repository, there is usually a folder called hooks

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in there, you can create scripts which's names correspond to certain events in git, like e.g. post-receive. This is fired after the server has received new files from a push event

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In my file post-receive, it says this: ```bash
#!/bin/sh

MYDATE="$(date)"
logger "[GIT] Received commit in tuxstash.git on $MYDATE"
ssh username@10.10.10.252 'bash /home/username/tuxstash.sh'```

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this basically just starts a script on my raspberry which then proceeds to do it's thing

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https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks

main olive Jan 23, 2020, 10:20 AM

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thank you

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also.. how do you do code review on gitlab..

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like.. what does Close merge request mean

steel verge Jan 23, 2020, 10:22 AM

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Sorry, that is not my world :D. All I do is push, pull and the occasional branch.

main olive Jan 23, 2020, 10:23 AM

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yeah.. same.. not even the branch.. lol

steel verge Jan 23, 2020, 10:23 AM

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I am an Admin, not a full time dev 😄

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But maybe ask in #tools-and-devops

main olive Jan 23, 2020, 10:23 AM

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I'm used a certain other method of source control.. gitlab is new to me

steel verge Jan 23, 2020, 10:24 AM

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I used SVN back in the day, I still call push a commit

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But it is really easy to run your own git service on your server. I run git on my NAS (Network Attached Storage) and all I need to do to set a repo up is git init --bare

main olive Jan 23, 2020, 10:28 AM

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thanks a bunch.. you've been a big help

steel verge Jan 23, 2020, 10:29 AM

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you're welcome 🙂

main olive Jan 23, 2020, 1:03 PM

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@main olive "close merge request" means that the pull request will be closed without the code in question being merged

main olive Jan 24, 2020, 3:28 AM

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so I should add comments against new sections of code being added in merge request and then do what? Is there a button to approve the request or LGTM @main olive

main olive Jan 24, 2020, 4:25 AM

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there should be a big button that says "Merge"

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what if there are multiple reviewers.. how do I just give my LGTM and let them merge after other reviews

main olive Jan 24, 2020, 4:49 AM

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@main olive I assume you're using gitlab from your terminology, so I'm not 100% familiar, but with GitHub you can set a minimum amount of approvals required for anyone to be able to merge

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https://help.github.com/en/github/administering-a-repository/enabling-required-reviews-for-pull-requests

Enabling required reviews for pull requests - GitHub Help

Repository administrators can enforce required reviews so that pull requests must have a specific number of approving reviews before they are merged.

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gitlab, respectively: https://docs.gitlab.com/ee/user/project/merge_requests/merge_request_approvals.html

Merge request approvals | GitLab

Documentation for GitLab Community Edition, GitLab Enterprise Edition, Omnibus GitLab, and GitLab Runner.

frank coral Jan 25, 2020, 11:19 AM

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Hello, I made a ubuntu container, and installed python 3.7 on it. But python 3.6 was already on the system, and so when I installed pip3, it installed for py 3.6

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What I did to install pip: (I'm root)
apt install python3-pip

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And what I've done before to install python3.7:

apt update
apt install software-properties-common
add-apt-repository ppa:deadsnakes/ppa
apt update
apt install python3.7```

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I would like to uninstall pip3.6 and install pip for 3.7

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This line:
apt install software-properties-common install python3.6

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Well all I used was:
pip3 install --upgrade pip and it seems to work now

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I'm trying to install the textract package but given all the sub-modules required, it's not easy

frank coral Jan 25, 2020, 12:08 PM

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Amazing, it works. Sad I didn't make my container persistent.

main olive Jan 25, 2020, 4:36 PM

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:( at least you know what to do

zinc brook Jan 26, 2020, 4:10 PM

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Hmm not sure if it goes here but

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How do I get whatever I put on a print statement (or well, the proper way, using the logging module) appear on journalctl? Since it doesn't appear at all.

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I generally set up logs like:

log = logging.getLogger(__name__)

log.info(...)

Nothing else.

fickle granite Jan 26, 2020, 5:07 PM

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if you're using logging, you generally want to do logging.basicConfig(), or the equivalent, before you start emitting logs

main olive Jan 26, 2020, 5:39 PM

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@zinc brook this might interest you https://lincolnloop.com/blog/logging-systemds-journal-python/

Lincoln Loop

Logging to Systemd's Journal in Python

I'll be the first to admit that I was skeptical about Systemd and its companion log aggregator Journald, but after ...

zinc brook Jan 26, 2020, 5:40 PM

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Huh interesting, I'll take a look at it. Thanks

digital haven Jan 26, 2020, 7:37 PM

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I use grep -rnw . -e "some string" quite a lot to search for some string recursively in files... is there anything I'm missing here? Alternatives or whatever

fickle granite Jan 26, 2020, 8:34 PM

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I imagine that works OK

fickle sparrow Jan 26, 2020, 8:47 PM

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@digital haven I like to use the silver searcher. Some other alternatives are mentioned at the bottom of their page here: https://github.com/ggreer/the_silver_searcher

GitHub

ggreer/the_silver_searcher

A code-searching tool similar to ack, but faster. Contribute to ggreer/the_silver_searcher development by creating an account on GitHub.

main olive Jan 26, 2020, 8:50 PM

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@digital haven I have that aliased to gh - "grep here"

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well, with flags -rni instead

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so case doesn't matter and it doesn't try matching a whole word

digital haven Jan 26, 2020, 9:28 PM

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@main olive that makes sense, cheers

main olive Jan 27, 2020, 11:36 AM

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is there a way to supply ttl or something when ssh-ing

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my connection keeps getting timed out after a period of inactivity

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@main olive https://bjornjohansen.no/ssh-timeout

{bjørn:johansen}

SSH timeout prevention – keep SSH sessions alive

SSH timeout due to inactivity is annoying. Here’s how to keep your SSH sessions alive and prevent the SSH timeout. Here are solutions for server and client.

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noice

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thanks a bunch

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strange.. it says I dont have a config file.. guess I'll make one

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configs are good to have, but you can also supply options from the command line with -o

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but just stick it in the config

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yayy

frank coral Jan 27, 2020, 3:10 PM

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I have a ssh connexion based on a key, how to disable connexion with passwords?

oak shell Jan 27, 2020, 3:11 PM

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https://linux.die.net/man/5/sshd_config PasswordAuthentication no in your /etc/ssh/sshd_config

sshd_config(5): OpenSSH SSH daemon config file - Linux man page

sshd(8) reads configuration data from /etc/ssh/sshd_config (or the file specified with -f on the command line). The file contains keyword-argument pairs, ...

frank coral Jan 27, 2020, 3:18 PM

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do I need to restart ssh daemon after that?

oak shell Jan 27, 2020, 3:23 PM

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reload should be enough, iirc

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but yeah, it doesn't update automatically

frank coral Jan 27, 2020, 3:25 PM

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https://askubuntu.com/questions/3850/how-can-i-audit-users-and-access-attempts-to-ssh-on-my-server

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sudo /etc/init.d/ssh restart is the right command to do so?

oak shell Jan 27, 2020, 3:25 PM

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that's old

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sudo systemctl reload ssh

frank coral Jan 27, 2020, 3:28 PM

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I got a permission denied with nano ssh_config , so I tried sudo nano ssh_config, and the file has been changed, however I got this message: sudo: unable to resolve host raspberrypi

oak shell Jan 27, 2020, 3:28 PM

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that means your hostname setting is bad.

frank coral Jan 27, 2020, 3:29 PM

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arg, is it critical?

oak shell Jan 27, 2020, 3:29 PM

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https://askubuntu.com/q/59458/367990

Ask Ubuntu

Error message "sudo: unable to resolve host (none)"

When I run sudo the terminal is stuck for a few seconds and then outputs an error message. My terminal looks like this:

ubuntu@(none):~$ sudo true
sudo: unable to resolve host (none)
What can I d...

frank coral Jan 27, 2020, 3:32 PM

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What I don't understand is that it changed the file even if there was this message.

oak shell Jan 27, 2020, 3:33 PM

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it might be just a warning, not an error, not sure. You should still fix it eventually, and make sure /etc/hostname and /etc/hosts are matching.

frank coral Jan 27, 2020, 3:33 PM

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ok, I'll reload the ssh first

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I still got the error/warning, hope it still worked

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I think I understand the problem

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When accessing directly to the rpm, I'm connected on host "A", but when I'm connecting through ssh, I'm with raspberrypi

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I think it's when I configured my ssh connexion, I didn't choose the right user

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I followed the guide right there: https://www.raspberrypi.org/documentation/remote-access/ssh/passwordless.md

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it may be tricky to do that remotely

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I also set LogLevel to VERBOSE to see log attempts

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Currently I think I'm connected under the user pi, how to change it?

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pam_unix(sshd:session): session opened for user pi

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Ok, I found out that I can't connect to user "A" because my key is only for user "pi", and I can't connect through password-connexion

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Well then I'll generate a new key...

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But I can't stack them in the same file...

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Seems like I'll have to use something like that:

Host myshortname realname.example.com
    HostName realname.example.com
    IdentityFile ~/.ssh/realname_rsa # private key for realname
    User remoteusername

Host myother realname2.example.org
    HostName realname2.example.org
    IdentityFile ~/.ssh/realname2_rsa  # different private key for realname2
    User remoteusername```

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Can I use the same private for multiple users on the same machine?

oak shell Jan 27, 2020, 4:20 PM

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sure

main olive Jan 27, 2020, 7:12 PM

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@frank coral look into SSH agent and agent forwarding

fiery badger Jan 28, 2020, 12:10 AM

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How do you "learn linux" as a dev working in Unix enviroment? (aka = not sysadmin, not developer or OSes). I have Linux Mint installation and i solve problems by googling. Just read through official docs for LM/Ubuntu/Debian?

south star Jan 28, 2020, 12:19 AM

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yeah mostly, using will confront you with enough cases where you have questions to learn it bit by bit

tall coyote Jan 28, 2020, 12:33 AM

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try to understand the things you do, if you follow tutorials or short responses in sites like SO. It was really common to see many years ago instructions that everyone followed and very few understood, such as doing ./configure make make installThis applies to tools related to Python as well

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remember your man is a great tool, you should learn how to use it, many times is faster than Google. For example, you can do man source and see what the heck is that that you use for virtualenv... things like that

fickle granite Jan 28, 2020, 1:14 AM

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eh, not so great; better than nothing, though

tall coyote Jan 28, 2020, 2:14 AM

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imo it's a great tool to search for what arguments do what. It's really fast to open it up and type / then -[something], specially when Google doesn't work quite well with that kind of thing

fickle granite Jan 28, 2020, 2:43 AM

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that's all entirely correct.

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but ... sigh

cobalt kite Jan 28, 2020, 1:23 PM

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so it says
https://cdn.discordapp.com/attachments/268453833208889345/671705640812675082/unknown.png
do I copy the whole * * * * * bash /home/vidyadhar/autoUnlock & >/dev/null 2>&1 and paste it?

main olive Jan 28, 2020, 2:25 PM

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@cobalt kite yes.

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changing the username if needed of course

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some info about the asterisks if you don't know what they mean

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https://crontab.guru/

crontab.guru - the cron schedule expression editor

An easy to use editor for crontab schedules.

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oops, replace the 4 and 5 on the site with asterisks

cobalt kite Jan 28, 2020, 2:32 PM

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@main olive Thank you man!!

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I got the thing to work. I read ur message late but thanks

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the crontab.guru webpage really helped tho.

main olive Jan 28, 2020, 2:33 PM

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no problem dog

cunning skiff Jan 28, 2020, 9:57 PM

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@fiery badger linux academy is a good start

fiery badger Jan 28, 2020, 11:18 PM

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Thanks! Never heard of it, but i should give it a look

vagrant trellis Jan 29, 2020, 1:26 AM

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Hi there, I'm braziliam so I'm sorry for any Spelling mistake, I'm just tryna build a script using python to make tasks easier, but I cant' execute a command with "sudo" I'm using the lib Os -> os.system, I would like to use these commands:
sudo apt-get autoremove -y
sudo apt-get autoclean -y
sudo apt-get clean -y
sudo apt-get update -y
sudo apt-get upgrade -y

This is what happen when I try to use any of them:
sh: sudo: command not found

I hope you understand

edgy minnow Jan 29, 2020, 1:41 AM

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those are bash/shell commands, do you really want/need to use python?

vagrant trellis Jan 29, 2020, 1:56 AM

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I'm a beginner programmer, I've started learning python so It would be good to use python to do this...

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Do ya understand?

tall coyote Jan 29, 2020, 3:00 AM

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@vagrant trellis you could use subprocess.run for that, it should prompt for the password in ypur program

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!d g subprocess.run

shy yokeBOT Jan 29, 2020, 3:01 AM

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`subprocess.run`

subprocess.run(args, *, stdin=None, input=None, stdout=None, stderr=None, capture_output=False, shell=False, cwd=None, timeout=None, check=False, encoding=None, errors=None, text=None, env=None, universal_newlines=None)```
Run the command described by *args*. Wait for command to complete, then return a [`CompletedProcess`](#subprocess.CompletedProcess "subprocess.CompletedProcess") instance.

The arguments shown above are merely the most common ones, described below in [Frequently Used Arguments](#frequently-used-arguments) (hence the use of keyword-only notation in the abbreviated signature). The full function signature is largely the same as that of the [`Popen`](#subprocess.Popen "subprocess.Popen") constructor - most of the arguments to this function are passed through to that interface. (*timeout*, *input*, *check*, and *capture\_output* are not.)... [read more](https://docs.python.org/3/library/subprocess.html#subprocess.run)

tall coyote Jan 29, 2020, 3:04 AM

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you'll need to separate your aguments in some iterable, if for example you want to run ping -c 2 127.0.0.1 you would call it something like this:python import subprocess subprocess.run(('ping', '-c 2', '127.0.0.1'))

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if you go for an alternative (there are), just remember, don't store your password in plain text

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sh: sudo: command not found
this sounds like you tried to run your script directly though, such as doing ./script.py, without a proper shebang

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you can read about it here: https://en.wikipedia.org/wiki/Shebang_(Unix)

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you could use #!/usr/bin/env python3

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although it also sounds as if you placed a bare sudo in a Python program, so I'm a bit confused

vagrant trellis Jan 29, 2020, 3:47 AM

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Tank you, but I just found a better way to solve it, I'll share it with you, it may help someone else...

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I just used
os.system('comand_here')
and it worked.

fickle granite Jan 29, 2020, 4:03 AM

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sigh

tall coyote Jan 29, 2020, 4:10 AM

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os.system spawns a new shell to run your commands, so it's generally better not to use it and use the functions from the subprocess instead; they are generally safer

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not really difference here, though, but subprocess offers many other things that might come handy later, if you want to use it a bit now

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why the sigh, @fickle granite?

fickle granite Jan 29, 2020, 4:16 AM

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os.system is one of those things that's easy to use at first, but eventually becomes more trouble than it's worth ... I'd hoped Nieles could have figured out subprocess

tall coyote Jan 29, 2020, 4:17 AM

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well, he's a beginner, as he said - he probably found something that "just worked", and that can be good enough

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it's better if you try to make them aware of what the advantages and disadvantages are, than just dropping a sigh

fickle granite Jan 29, 2020, 4:51 AM

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well, sure

main olive Jan 29, 2020, 1:43 PM

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dig domain_name +short | whois

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this can't be achieved because whois doesnt take output as input

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but rather direct command line arguments

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does anyone know how to overwrite whois's binary so that i can parse the output of dig onto it as a parameter

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im using rn dig domain_name +short | xclip

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and then ```
whois xclip -o

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which is a lot of hassle

warped nimbus Jan 29, 2020, 4:11 PM

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Sounds like you need xargs

main olive Jan 29, 2020, 4:41 PM

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@main olive why not cut the xclip middleman, just

whois $(dig domain_name +short)

warped nimbus Jan 29, 2020, 4:48 PM

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Oh right that's more ingenious

main olive Jan 29, 2020, 10:53 PM

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Hi, I'm sorry if this isn't the right channel but I don't understand much about computers. I want to ask about shell script for mac

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Like, I want to create a script for the terminal

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And I can't find anything on the syntax

#

Can I ask here?

warped nimbus Jan 29, 2020, 10:55 PM

#

Yes

#

They're called shell scripts

#

If you're on the latest version of mac OS, your shell is zsh

#

Here's the manual for that http://zsh.sourceforge.net/Doc/Release/zsh_toc.html

zsh: Table of Contents

main olive Jan 29, 2020, 10:59 PM

#

Ohh, thank you!

#

Ok, I'll try to do it now. Thank you so much!

#

What is that "fi"?

#

if list then list [ elif list then list ] ... [ else list ] fi

warped nimbus Jan 29, 2020, 11:03 PM

#

That's just how the syntax is

#

fi is always at the end

main olive Jan 29, 2020, 11:03 PM

#

Oh, ok

tall coyote Jan 29, 2020, 11:04 PM

#

it's a mirrored if if that's what you're asking

fickle sparrow Jan 29, 2020, 11:05 PM

#

this might help, @main olive http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html. Secion 6, Conditionals, will tell you all about that fi.

main olive Jan 29, 2020, 11:05 PM

#

Oh, I just assumed it was like "final" or something, haha

#

Thank you, jeroentbt! I'll look into that

#

In the meantime, does this make any sense? Because it's not really working...

#

if networksetup -getairportpower en0 == On then networksetup -setairportpower en0 off [elif networksetup -getairportpower en0 == Off then networksetup -setairportpower en0 on] fi

#

Also, question: is "zsh" a programming language?

#

Oh, wait

#

if [networksetup -getairportpower en0 = On]; then
    networksetup -setairportpower en0 off
elif [networksetup -getairportpower en0 = Off]; then
    networksetup -setairportpower en0 on]
fi```

#

Now it doesn't give me an error but it doesn't do anything

oak shell Jan 29, 2020, 11:12 PM

#

I assume networksetup -getairportpower en0 is a command that prints either "On" or "Off"?

main olive Jan 29, 2020, 11:13 PM

#

I suppose?

#

If I put that in the terminal it prints out:

#

Wi-Fi Power (en0): On

#

Do I have to copy all that?

oak shell Jan 29, 2020, 11:15 PM

#

oh, you use zsh. I'm not familiar with that shell, I mostly know bash. But it should probably be fairly similar.

main olive Jan 29, 2020, 11:17 PM

#

Anyway, I'm doing this on the Automator app. Perhaps I can ask it to run using bash or something like that?

#

If it's even possible?

#

Oh, yes, sorry

#

I just saw that you can

#

ok i give up baii

main olive Jan 30, 2020, 6:33 AM

#

@main olive [ and ] need to be surrounded by spaces (and I recommend using [[

#

so, like

#

if [[ $(networksetup -getairportpower en0) = "On" ]]; then
    networksetup -setairportpower en0 off
elif [[ $(networksetup -getairportpower en0) = "Off" ]]; then
    networksetup -setairportpower en0 on
fi

#

or even better

#

STATUS=$(networksetup -getairportpower en0)
if [[ "$STATUS" = "On" ]]; then
    networksetup -setairportpower en0 off
elif [[ "$STATUS" = "Off" ]]; then
    networksetup -setairportpower en0 on
fi

main olive Jan 30, 2020, 6:56 AM

#

although I'd use a switch, like so:

CMD="networksetup"
STATUS=$($CMD -getairportpower en0)

case "$STATUS" in
  Off)
    $CMD -setairportpower en0 on
    ;;
  
  On)
    $CMD -setairportpower en0 off
    ;;

  *)
    echo "Unknown status: $STATUS"
    ;;
esac

main olive Jan 30, 2020, 10:57 AM

#

@main olive that works, thank you so much!

main olive Jan 30, 2020, 11:33 AM

#

np dog

main olive Jan 30, 2020, 12:03 PM

#

@main olive didn't wanna use special characters like ` or )

#

how are those special characters?

#

and why so

lavish badger Jan 30, 2020, 3:46 PM

#

how did u get venv to work on linux?

fickle granite Jan 30, 2020, 3:51 PM

#

:-) 2020-01-30T15:50:06+0000 [ip-10-0-0-79 tmp]$ /usr/bin/python3 -m venv venv
:-) 2020-01-30T15:50:26+0000 [ip-10-0-0-79 tmp]$ ./venv/bin/python --version
Python 3.6.8
:-) 2020-01-30T15:50:32+0000 [ip-10-0-0-79 tmp]$

fickle sparrow Jan 30, 2020, 3:52 PM

#

I like https://virtualenvwrapper.readthedocs.io/. Newbie in Python and this made sense to me. I know it's not venv but I don't think, in the end, there is a difference.

lavish badger Jan 30, 2020, 3:53 PM

#

Thanks

#

What does the code in the answer by 'Or Duan' do?
https://stackoverflow.com/questions/34271982/install-python3-venv-module-on-linux-mint?noredirect=1&lq=1

fickle sparrow Jan 30, 2020, 4:13 PM

#

it sets the locale on your computer

#

https://www.shellhacks.com/linux-define-locale-language-settings/

ShellHacks

Linux: Define Locale and Language Settings - ShellHacks

Language settings in Linux (Ubuntu, CentOS). Set (define) locale and language. Add (generate) new locales. Change locale and language settings.

lavish badger Jan 30, 2020, 4:16 PM

#

Thanks!

#

It wants me to do apt-get install python3-venv but I'm not supposed to mess with linux python right? I'll mess up the OS.

strong hedge Jan 30, 2020, 4:24 PM

#

is there a way to automatically install all required libraries before running a python script? because i have to try and run my script to get an error, install missing lib and retry. this is going on for about 10 minutes now and its getting harder to find the missing libraries

lavish badger Jan 30, 2020, 4:25 PM

#

is there a requirements.txt file?(I'm a noob, so can't help further, sry)

strong hedge Jan 30, 2020, 4:27 PM

#

if you mean the script im trying to run. no. thats just one that i made. the problem is importing cv2. it always throws errors for missing libs

warped nimbus Jan 30, 2020, 4:32 PM

#

It can't be missing python libraries otherwise it wouldn't have been able to install (safe to assume cv2 correctly specified its own dependencies)

#

If you mean libraries in general then I don't think it is possible when installing via pip

#

But if you install cv2 using your systems package manager (assuming there is a package on there for cv2) then it should install those libraries

#

Keep in mind that such an install will only install for the default python that came with the system

strong hedge Jan 30, 2020, 4:35 PM

#

im not installing them with pip. Im getting errors like this ImportError: libIlmImf-2_2.so.23: cannot open shared object file: No such file or directory. I installed cv2 with pip3 install opencv-contrib-python and pip3 install opencv-python

warped nimbus Jan 30, 2020, 4:35 PM

#

I meant installing cv2 with pip, which is exactly what you're doing

strong hedge Jan 30, 2020, 4:36 PM

#

thats what i did

#

but i just get them errors

#

and i got python 3.7 with os install

warped nimbus Jan 30, 2020, 4:37 PM

#

You misunderstood me

strong hedge Jan 30, 2020, 4:37 PM

#

using raspbian lite btw

warped nimbus Jan 30, 2020, 4:37 PM

#

What I said was if installing cv2 with pip, it is not possible for pip to automatically install those libraries

strong hedge Jan 30, 2020, 4:37 PM

#

ah

#

makes some sense

#

so what would be the way to install cv2 with required libraries?

warped nimbus Jan 30, 2020, 4:39 PM

#

Like I said, you can do it if you install with the system's package manager

#

Debian has a package https://packages.debian.org/buster/python3-opencv

#

If you need to install it for a different Python interpreter than raspbian's default, then I think installing this package is still useful because at the least you'll get all the libraries needed.

strong hedge Jan 30, 2020, 4:42 PM

#

ill give it a try

#

ayy more ImportErrors

#

im fcking done with this

fickle sparrow Jan 30, 2020, 6:00 PM

#

@lavish badger I don't see a problem with installing it in that way. It is something you want to be available globally. (although I was under the impression that venv is builtin in python3....

main olive Jan 30, 2020, 6:02 PM

#

@lavish badger jeroen is right, installing python packages with your operating system's package manager is totally safe

#

as is installing with pip if you use the --user flag or a venv

#

it's sudo pip which you should never ever do

oak shell Jan 30, 2020, 6:02 PM

#

not really

#

if you trust the packages, it's sometimes even necessary

vestal turret Jan 30, 2020, 6:03 PM

#

Yeah jeroen, it's been since v3.3

oak shell Jan 30, 2020, 6:03 PM

#

(sudo -H python3 -m pip preferably though)

main olive Jan 30, 2020, 6:08 PM

#

@oak shell huh?

#

I'm not talking about trust, although that's a good point, it's not as vetted

#

I'm talking about file conflicts with OS package manager managed files

#

which happens quite a lot if you abuse sudo pip

#

even when installing as root you should preferably do --user so it gets installed into /root and not the rootfs

oak shell Jan 30, 2020, 6:43 PM

#

nah, you don't get conflicts, at least not on Debian-based systems. 🤨

#

those should be separated in /usr/lib vs /usr/local/lib and dist-packages vs site-packages, although I don't remember the exact details of which go where

main olive Jan 30, 2020, 7:15 PM

#

they very definitely conflict on arch

mossy sleet Jan 31, 2020, 1:24 PM

#

@steel verge

#

📎 IMG_20200131_142323.jpg

steel verge Jan 31, 2020, 1:24 PM

#

yeah

#

now ls each of those until you find something containing /grub or /boot etc

#

ls (hd0)

#

ls (hd0.gpt4)

#

and so on

mossy sleet Jan 31, 2020, 1:25 PM

#

Alright I will update you with a pic in a minute

steel verge Jan 31, 2020, 1:25 PM

#

or /efi/grub/boot

#

are you trying to boot a linux or just getting the Windows bootloader back?

mossy sleet Jan 31, 2020, 1:26 PM

#

Getting windows bootloader back

steel verge Jan 31, 2020, 1:26 PM

#

oh

#

in that case just boot from a usb key

#

but you said the computer does not recognize those at all?

mossy sleet Jan 31, 2020, 1:26 PM

#

When I boot with windows bootable USB I get this

📎 IMG_20200131_131112.jpg

steel verge Jan 31, 2020, 1:27 PM

#

mmmh looks like the boot medium is damaged

#

continue to try and ls the hd partitions and see if you find a bootloader. When it works we can try to repair it somehow

main olive Jan 31, 2020, 1:41 PM

#

maybe #491524019825278977 is more appropriate?

steel verge Jan 31, 2020, 1:47 PM

#

And #491524019825278977 will complain about grub. Stop sending him around channels, it's a mixed issue

mossy sleet Jan 31, 2020, 2:01 PM

#

@steel verge you still here?

steel verge Jan 31, 2020, 2:02 PM

#

yeah

mossy sleet Jan 31, 2020, 2:02 PM

#

📎 IMG_20200131_150223.jpg

#

Simply nothing

steel verge Jan 31, 2020, 2:03 PM

#

hd0.gpt2 seems to be the Windows bootloader though

#

insmod part_gpt
insmod chain
set root=(hd0,gpt2)
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
boot```

#

try this

#

If that does not work, try simply typing exit and see if anything comes up

#

Another method to try is to simply go to the UEFI in the laptop and select the bootloader from there, if that is available

#

just remembered that, lol

mossy sleet Jan 31, 2020, 2:06 PM

#

I also found a second USB with windows and it found msdos2

📎 IMG_20200131_150620.jpg

steel verge Jan 31, 2020, 2:07 PM

#

that seems to be a cd rom

#

Can you boot into UEFI?

#

some call it bios

mossy sleet Jan 31, 2020, 2:07 PM

#

Yes I can boot into UEFI

steel verge Jan 31, 2020, 2:07 PM

#

Look if you can select a different bootloader there

mossy sleet Jan 31, 2020, 2:07 PM

#

I use the Microsoft Surface Pro 4

steel verge Jan 31, 2020, 2:07 PM

#

should be somewhere under boot

mossy sleet Jan 31, 2020, 2:08 PM

#

Hmm alright let me see but I will try the commands first

steel verge Jan 31, 2020, 2:08 PM

#

https://cdn1.surfacetip.com/wp-content/uploads/2017/04/sp4-uefi-boot-configuration-1024x685.jpg

mossy sleet Jan 31, 2020, 2:10 PM

#

📎 IMG_20200131_151002.jpg

#

📎 IMG_20200131_151017.jpg

steel verge Jan 31, 2020, 2:12 PM

#

I'd be crazy enough to just launch a pxe env to solve that, but that the WIndows bootloader is totally gone is werid

mossy sleet Jan 31, 2020, 2:12 PM

#

When I boot from "Ubuntu" it just pushes me to Grub

steel verge Jan 31, 2020, 2:12 PM

#

Yeah, because Grub is the bootloader

#

What happens if you boot from internal storage?

#

not sure what they mean with that, never had a surface

mossy sleet Jan 31, 2020, 2:13 PM

#

Let me ty and boot from internal storage

#

The device just switches off

#

I have to turn it on again only to be welcomed by GRUB

steel verge Jan 31, 2020, 2:14 PM

#

can you somehow make a new usb key? or a second one with a live linux or a new Windows iso?

#

we need to get into recovery

mossy sleet Jan 31, 2020, 2:15 PM

#

The two USB sticks I have are freshly made Windows ISO bootable USB formatted as NTFS and partitioned as GPT

#

I made them like 20min ago

steel verge Jan 31, 2020, 2:16 PM

#

ok

#

my next bet would've been secure boot, but that is disabled

#

I am out of ideas at this point

mossy sleet Jan 31, 2020, 2:17 PM

#

Hmm

#

I could try and make another Linux bootable USB

#

And we could work from the command line

#

I mean the Linux terminal

#

@steel verge

steel verge Jan 31, 2020, 2:18 PM

#

https://www.supergrubdisk.org/

Rescatux & Super Grub2 Disk

MarkA

Rescue your Windows & GNU/Linux systems - Rescatux & Super Grub2 Disk

Whether you want to recover access to your unbootable GNU/Linux or you have forgotten your Windows password Rescatux is for you. Use Super Grub2 Disk whenever you cannot boot into any of your systems. Discover all the available rescue options to take in control your machine a...

#

Look at the middle option

#

Never used it

#

https://www.supergrubdisk.org/wizard-restore-grub-with-super-grub2-disk/

Rescatux & Super Grub2 Disk

adrian15

Wizard - Restore Grub with Super Grub2 Disk

Wizards that link to this one Wizard - Restore Grub Introduction This wizard explains step by step how to restore Grub to your machine thanks to Super Grub2

#

Maybe that helps

mossy sleet Jan 31, 2020, 2:20 PM

#

Hmm I assume I burn the rescatux iso and attempt to boot from USB normally?

steel verge Jan 31, 2020, 2:20 PM

#

worth a try

#

or Super Grub2 Disk. But I guess any will help or not

mossy sleet Jan 31, 2020, 2:21 PM

#

I hope this program is capable of literally wiping all partitions and drives, reformatting them and copying/flashing a bootloader onto them

steel verge Jan 31, 2020, 2:22 PM

#

Bootloaders just sit on the hdd in a separate partition

#

The part where it says EFI is the bootloader

📎 unknown.png

mossy sleet Jan 31, 2020, 2:24 PM

#

https://sourceforge.net/p/boot-repair-cd/home/Home/

#

Do you think this could also help?

steel verge Jan 31, 2020, 2:25 PM

#

I haven't used any of those, so I can only guess. They promise to help, if they do we will see

mossy sleet Jan 31, 2020, 2:27 PM

#

Trying rescatux first

main olive Jan 31, 2020, 2:52 PM

#

mind detailing your issue so the rest of us can chime in?

steel verge Jan 31, 2020, 3:05 PM

#

@main olive Basically, any usb key won't boot. The Windows bootloader is completely gone, even from the uefi menu

#

And Grub won't boot either, not even with the command line

#

Which is weird, because the boot loader from a linux i've installed 2 years ago is still there

main olive Jan 31, 2020, 3:29 PM

#

grub seems to be booting, though?

#

just missing a config

mossy sleet Jan 31, 2020, 3:34 PM

#

Update: I managed to boot a Linux USB with bootloader fixer installed

#

I selected options to restore MBR, clean and auto setup partitions etc

#

About to try and boot a windows USB

#

Update: still error can't boot Windows from USB

#

📎 IMG_20200131_131112.jpg

#

@main olive @steel verge

#

Odd because I can boot any Linux OS

#

But I can't boot Windows

#

(from bootable USB of course)

steel verge Jan 31, 2020, 3:44 PM

#

can you boot normally now?

main olive Jan 31, 2020, 3:46 PM

#

Why do you think debian 9 is giving me this?

📎 unknown.png

#

and cant find this package

📎 unknown.png

#

https://packages.debian.org/source/sid/python3.8

#

apologises for screenshots, i dont have access to clipboard in vm rn

steel verge Jan 31, 2020, 3:47 PM

#

Because Debian does not provide newer packages very quick, you need another bleeding edge repo probably

main olive Jan 31, 2020, 3:48 PM

#

hm... damn I didnt know that

steel verge Jan 31, 2020, 3:48 PM

#

Server Distributions rely on sophisticated packages to provide a stable environment

#

and I suggest you use 3.7

main olive Jan 31, 2020, 3:48 PM

#

Does this mean they are bad for me to use as a server due to security updates not being updated?

steel verge Jan 31, 2020, 3:48 PM

#

until 3.8 is stable enough for production

main olive Jan 31, 2020, 3:48 PM

#

mm

#

Okay so

#

What do I need to run Django?

#

Do you know offhand?

steel verge Jan 31, 2020, 3:48 PM

#

No, you are thinking differently about it

#

I wanted to avoid wrong here

#

Server systems are in the public space

main olive Jan 31, 2020, 3:49 PM

#

That makes sense.

#

about stability

steel verge Jan 31, 2020, 3:49 PM

#

they need to be secure, newer features are less of a priority

#

also, stability, as you just said

main olive Jan 31, 2020, 3:49 PM

#

Makes sense, totally.

#

All I need is whatever Django needs then, let me find out

steel verge Jan 31, 2020, 3:49 PM

#

Do you absolutely need a feature from 3.8?

main olive Jan 31, 2020, 3:49 PM

#

noper

#

I just assumed Django would want it and didnt think about this

#

but it makes sense

#

Django version     Python versions
1.11     2.7, 3.4, 3.5, 3.6, 3.7 (added in 1.11.17)
2.0     3.4, 3.5, 3.6, 3.7
2.1     3.5, 3.6, 3.7
2.2     3.5, 3.6, 3.7, 3.8 (added in 2.2.8)
3.0     3.6, 3.7, 3.8

So, I need a minimum of 3.6 due to security upgrades that are necessary in 3.0 and moving forward

#

How can i safely add that to the repositories?

#

If I am going to go this route already, I should just do 3.7 if you would consider it stable

steel verge Jan 31, 2020, 3:56 PM

#

You need to build it

main olive Jan 31, 2020, 3:56 PM

#

since moving forward

steel verge Jan 31, 2020, 3:56 PM

#

https://linuxize.com/post/how-to-install-python-3-7-on-debian-9/

How to Install Python 3.7 on Debian 9

Python is one of the most popular programming languages in the world. With its simple and easy to learn syntax Python is a great choice for beginners and experienced developers. This tutorial covers how to install Python 3.7 on Debian 9.

main olive Jan 31, 2020, 3:56 PM

#

Ok thank you

main olive Jan 31, 2020, 5:27 PM

#

Ok i need help

#

Failed to mount '/dev/sdb4': Input/output error
NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!
The usage of the /f parameter is very IMPORTANT! No modification was
made to NTFS by this software.

Failed to open '/dev/sdb4'.

$MFTMirr does not match $MFT (record 0).
Failed to mount '/dev/sdb4': Input/output error
NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!
The usage of the /f parameter is very IMPORTANT! No modification was
made to NTFS by this software.

Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The cause might be a missing software package.
The following list of software packages is required for ntfs file system support:  ntfs-3g / ntfsprogs.```

#

Can't mount a partition that was made in windows

uneven silo Jan 31, 2020, 5:30 PM

#

uh yeah linux doesn't have native ntfs support

#

install ntfs-3g like it says

main olive Jan 31, 2020, 5:30 PM

#

ntfs-3g ?

#

yeah

#

why doesn't ntfs-3g tell to reboot ?
man i would have saved 2 minutes

digital haven Jan 31, 2020, 11:48 PM

#

i'm trying to use makefiles at the moment and I'm getting a bit confused about how to go about it.

example script

import os
import random
x = [str(random.randint(10,20)) for _ in range(100000)]
with open('one.txt', 'a') as f:
    f.write(''.join(x))
with open('two.txt', 'a') as f:
    f.write(''.join(x))

example makefile

one.txt : runner.py
    python runner.py

two.txt : runner.py
    python runner.py

So here I'm expecting this to build files one.txt and two.txt by calling
make at the command line, which it does first time.

If I call make again straight after it says make: 'one.txt' is up to date, which is fine (no mention of two.txt though).

But If I delete two.txt, then re-run make, I get the same message about
make: 'one.txt' is up to date, and it doesn't do anything about two.txt.

So I feel I've done something wrong, or there's something I'm missing.

To recap:

save above files to dir
run make
delete two.txt
run make
you will never create two.txt now

warped nimbus Jan 31, 2020, 11:53 PM

#

The first rule in the makefile is the default one

#

make without arguments will always call only the default rule i.e. the first rule

digital haven Jan 31, 2020, 11:56 PM

#

@warped nimbus no it will call them both if the files don't exist

#

oh no - because my script outputs both files, so even if only one is called i'll see both 🤦

#

@warped nimbus i'm a bit confused about how to account for multiple files like this then, as it seems i can only have a single target

one.txt two.txt : runner.py
    python runner.py

i tried this, it runs, but i'm able to delete two.txt and never see it again as a result of re-running make

warped nimbus Feb 1, 2020, 12:03 AM

#

from the docs

#

The default goal is the target of the first rule in the first makefile. If the first rule has multiple targets, only the first target is taken as the default.

#

Not sure if there is a way to make it use both targets

#

you could just define another rule to be the default one

#

I think this is the right page which explains it https://web.mit.edu/gnu/doc/html/make_9.html#SEC80

digital haven Feb 1, 2020, 12:10 AM

#

all: one.txt two.txt

one.txt two.txt:
    python runner.py

.PHONY: all

this seems to work, but i'm not sure how robust it'll be

#

needing to know the names of all the output files seems to be a bit of a flaw, are there any make alternatives?

#

i like that it will only compile things once, but it feels a bit clunky

warped nimbus Feb 1, 2020, 12:29 AM

#

Well you could just make it a phony target

digital haven Feb 1, 2020, 12:30 AM

#

i don't understand - i have a phony year target above and have listed them out

warped nimbus Feb 1, 2020, 12:31 AM

#

I mean you could just have a single rule that is a phony target

#

and it will do python runner.py

digital haven Feb 1, 2020, 12:31 AM

#

if all this is doing is providing a check that a file doesn't need compiling why are we still using a 1970s program, seems we could just write a python script for this

warped nimbus Feb 1, 2020, 12:31 AM

#

and not care about file names

main olive Feb 1, 2020, 12:43 AM

#

question about uwsgi (and nnginx to run django)... LTS or latest stable release? What is best to go with in something like that?

fallen silo Feb 1, 2020, 12:45 AM

#

if you're on linux install the one that comes with your package respository (most likely the LTS) 2.0 @main olive

main olive Feb 1, 2020, 12:54 AM

#

Debian 9 --
https://uwsgi-docs.readthedocs.io/en/latest/Install.html
So far my experience with debian 9 is that it comes packaged with absolutely nothing and the repo is full of very old version, which is fine for most things. I did have to build python3.7 from source to upgrade from 3.5 though.

#

According to these instructions I have to build with python or pip, and there are just the two options

#

LTS means... long term support, and the other is latest stable

#

what does that really mean?

#

LTS that is.

#

With Django what I need is... when vulnerabilities come out, I need the short term upgrade to the next stable version of fixes version.

#

not oldstable versions like with most tools, right?

#

and its rapdily moving and growing and changing sort of thing, so i imagine i should just get latest stable BUT

#

I dont actually know what uwsgi IS.

#

I know its part of the server stack

#

Maybe its better to have LTS version of that

#

it's a thing i need for nginx to work with django, which is a thing I need for my friend to more easily host it for me eventually. Theyre otherwise things I have never set up before.

#

I mean I can do it, I just want to know the details of what im setting up.

#

It looks like it is the core of the server, where as nginx is the aspects of serving to the web.

#

its an applications container.

fallen silo Feb 1, 2020, 1:26 AM

#

LTS will have longer support, means the developers will continuously push updates, bug fixes, security patches until the end of the cycle (next LTS release). Latest stable version has newer features, updates, but can contain minor bugs, but no long term support.

Normally debian, ubuntu apt ships most stable one, it seems debian 9 has version 2.0.14 (the latest is 2.0.18) https://packages.debian.org/stretch/uwsgi

But you can install it from pip3 for the most recent version 2.0.18 https://uwsgi-docs.readthedocs.io/en/latest/tutorials/Django_and_nginx.html @main olive

main olive Feb 1, 2020, 1:46 AM

#

thank you that's a good guide.

But I have one more question. python3 is by default 3.5 which isn't acceptable. I have 3.7 built from source and isntalled as an altinstall. Should i modify python env variables or some such to ensure the correct version is being accessed?

also without thinking I followed the commands for pip install... and got a uWFI install for python2.7 which I should probably remove before i just... use pip3 isntead, and move along?

There seem to be a lot of people clamouring to make 2 and 3 work together but the pages are dated around 2016. Im not sure it's as necessary anymore. I personally dont care about 2.7. If I could tell the machine somehow,

"Please dont use this for any of my stuff.. 2.7 is for your old legacy stuff. Keep it out of my sight."

#

https://uwsgi-docs.readthedocs.io/en/latest/Python.html#using-the-django-uwsgi-django-app -- this is not necessary is it?

#

im gonna just try python3.7 -m pip install uwsgi

#

and see if it knows what to do with that

#

to make sure it doesnt do the wrong python3

fallen silo Feb 1, 2020, 1:59 AM

#

Yes, make sure the python3.x version you want to use all the time is in the environment variables/$path
It's better if you remove the python2 uwsgi pip uninstall uwsgi
python 2 and 3 aren't backward compatible, there could be ways to make them work alongside but that'd not be useful for uwsgi in this case. Besides python2 has been deprecated already.
It seems django_uwsgi is needed for uwsgi package to work with django, yes install it too.
@main olive

main olive Feb 1, 2020, 2:25 AM

#

thanks so much. Already did no. 2. and yeah, even if there were python2 apps I could be serving up, I don't want to as they are probably just vulnerabilities and not going anywhere forward at worst. There are still some useful python2 tools 100%, but... probably not useful python2 web apps to be running lol.

Ive never added anything manually to path before, but I have checked and it seems like it should be in path where it is. Either way. I have set up pipenv very intricately to get the effects I need from any python set up actually.

I do this all the time on my desktop. The only thing is that guides always show virutalenv as the tool being used to activate these envs on these servers.

Hopefully i wont have to switch tools as I am very comfortable with pipenv. I can do pretty much anything with it more easily than other tools.

#

yeah, its simple enough. You just have to locate the directory where it places the activate script (usually different than the project directory) and use source to activate it same as other tools.

#

alrioght ty

main olive Feb 1, 2020, 2:43 AM

#

Unrelated completely...

I have to figure out how to get basic copy and paste functionality from desktop to vm. I have clipboard shared. I am using CTRL + SHIFT + V. I normally do this in GUI vms all the time.

I have tried using xclip but it says that the DISPLAY is null, probably because x11 isnt installed.

What can I do to get copy and paste functionality in this basic interface without installing things i dont need?

I suppose I gotta set up ssh lol. But id rather not. ITs a just a VM on my own machine right in front of me. ideas?

📎 unknown.png

#

I could write a socket script... but there is a simpler way than that i know

fallen silo Feb 1, 2020, 2:52 AM

#

I'm used to the CTRL + SHIFT + V and xclip for complex texts. There's also xsel http://www.vergenet.net/~conrad/software/xsel/

XSel by Conrad Parker

Homepage of Conrad Parker

main olive Feb 1, 2020, 2:55 AM

#

I did try those things and it just.... in this debian 9 stack with nothing on it for a server, where i literally have to install every tool that i need to use from the ground up, it just doesnt want to work. But...

#

its all good.

#

I just made some ssh keys and as simple as that heh.

#

I just hate having keys everywhere if i dont need them. but i suppose i do

main olive Feb 1, 2020, 7:48 AM

#

I was gonna say

#

if you're not installing X on your VM, it's better to run it entirely headless and instead SSH in

steel verge Feb 1, 2020, 8:24 AM

#

With VS Code you can also open a remote folder on your vm via ssh.

#

but you can work on it like it is on your machine

#

so no more googling "how do I exit vim?"

#

😛

main olive Feb 1, 2020, 10:14 AM

#

or, y'know... git gud :p

cunning skiff Feb 1, 2020, 6:47 PM

#

Or you can mount a network drive to you server and then mount the same drive to your machine and and Dev using what ever you like on your local

warm raft Feb 1, 2020, 7:12 PM

#

:(

📎 unknown.png

#

📎 unknown.png

main olive Feb 1, 2020, 7:19 PM

#

@warm raft you probably want to drop the -e

#

that's for setting ssh's escape character (read more from the man pages man ssh)

#

running a command on the remote server requires no flag

warm raft Feb 1, 2020, 7:21 PM

#

oh wow, i thought it was exec, why is it t and not e

#

oh rly

main olive Feb 1, 2020, 7:22 PM

#

SYNOPSIS
     ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-B bind_interface] [-b bind_address] [-c cipher_spec]
         [-D [bind_address:]port] [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11]
         [-i identity_file] [-J destination] [-L address] [-l login_name] [-m mac_spec]
         [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address] [-S ctl_path]
         [-W host:port] [-w local_tun[:remote_tun]] destination [command]

#

see last 2 options

warm raft Feb 1, 2020, 7:22 PM

#

it runs differently with -t

📎 unknown.png

main olive Feb 1, 2020, 7:23 PM

#

-t allocates a pseudoterminal

#

ie emulates a tty

white solar Feb 1, 2020, 7:23 PM

#

i really like that terminal setup you got going there @warm raft

#

arch?

warm raft Feb 1, 2020, 7:24 PM

#

its really just some configs i copy/pasted

main olive Feb 1, 2020, 7:24 PM

#

@white solar how do you like mine? https://asciinema.org/a/3VJZGpg3bAabL3bY3eUEwdi6u

asciinema

neonsea

untitled

Recorded by neonsea

warm raft Feb 1, 2020, 7:24 PM

#

https://larbs.xyz

white solar Feb 1, 2020, 7:24 PM

#

definitely better than mine :p

#

ooooh

#

that's luke's setup

warm raft Feb 1, 2020, 7:25 PM

#

yess

white solar Feb 1, 2020, 7:25 PM

#

how could i not remember that

warm raft Feb 1, 2020, 7:25 PM

#

absolutely loving i3 and all

#

started using stuff like this like a few months ago

white solar Feb 1, 2020, 7:25 PM

#

i tried installing arch once

#

said noone ever

main olive Feb 1, 2020, 7:25 PM

#

who the hell is luke

warm raft Feb 1, 2020, 7:26 PM

#

luke smith on yt

#

https://lukesmith.xyz

white solar Feb 1, 2020, 7:26 PM

#

luke smith

main olive Feb 1, 2020, 7:26 PM

#

wait, let me guess

white solar Feb 1, 2020, 7:26 PM

#

arch lover and great talker

warm raft Feb 1, 2020, 7:26 PM

#

yes

main olive Feb 1, 2020, 7:26 PM

#

ah yeah, it's the guy I was thinking of

warm raft Feb 1, 2020, 7:26 PM

#

i love how everyone kind of knows him

main olive Feb 1, 2020, 7:26 PM

#

not too fond of him personally as he seems to present misleading information/knowledge often

white solar Feb 1, 2020, 7:26 PM

#

i love his content

warm raft Feb 1, 2020, 7:27 PM

#

me too

#

@main olive where for example?

#

do you know any specific video on where that occurs

white solar Feb 1, 2020, 7:27 PM

#

as he seems to present misleading information/knowledge often
how so

warm raft Feb 1, 2020, 7:29 PM

#

i was so amazed by the minimalist vim terminal editor he was using all the time that i started learning it back on windows

main olive Feb 1, 2020, 7:30 PM

#

i don't keep track of it and i've only seen a few of his videos, but i often hear him say "X is an incorrect way of doing Y, you have to do Z instead" about things where X is perfectly valid and has its own reasons that he either doesn't know about or just doesn't care about

#

i think i saw a video where he ranted how "it makes him mad" when people use cat to pipe files into other commands

warm raft Feb 1, 2020, 7:31 PM

#

this is the one i just thought in my head when you sent the first message

#

not exactly sure but i think he later said that its not really super bad but to use cat, but for max efficiency you should use <

#

cat is like muscle memory to me and i dont accidently wipe a file by using > instead of < when i just wanna harmlessly see what's in it

main olive Feb 1, 2020, 7:36 PM

#

EXACTLY

white solar Feb 1, 2020, 7:36 PM

#

i agree

warm raft Feb 1, 2020, 7:36 PM

#

i also wrote that as comment on the vid

#

so, you dont have to agree on every thing he says but i still like to watch his stuff

#

ok so im gonna try 6ixcord, looks very cool to me

white solar Feb 1, 2020, 7:41 PM

#

although, topic of linux on yt is a very wild place

#

a lot of rants

cunning skiff Feb 1, 2020, 8:55 PM

#

I wouldn't say luke was a great talker.
Very opionated and full of attitude from what I can see.
But defo good at what he does. There is a lot of merit in his works.
But I would think twite before entering a conversation with him

#

@white solar This is what Linux does.

Allows people to express themselves.

Many people get passionate about a thing and will defend it to the death.

vast topaz Feb 2, 2020, 12:55 AM

#

@slender agate start out with sudo apt install python3.8

#

if it complains about that package not being found you might have to do a sudo apt update

slender agate Feb 2, 2020, 12:56 AM

#

i have 3.8

vast topaz Feb 2, 2020, 12:56 AM

#

then do sudo apt install python3-pip

slender agate Feb 2, 2020, 12:56 AM

#

i have pip as well

vast topaz Feb 2, 2020, 12:56 AM

#

Oh, you want 3.7 specifically?

slender agate Feb 2, 2020, 12:56 AM

#

yeh

#

3.7.6

#

i cant find anyway to install it directly

vast topaz Feb 2, 2020, 1:00 AM

#

ok, looks like you need to use a third party package repository since Ubuntu proper hasn't upgraded from 3.7.5 to 3.7.6 yet

slender agate Feb 2, 2020, 1:00 AM

#

ah damn

vast topaz Feb 2, 2020, 1:00 AM

#

you should be able to do that with sudo apt update sudo apt install software-properties-common sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update sudo apt install python3.7

#

that should get you 3.7.6 from here https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa

#

after that, you should be able to run it from the command line with python3.7

slender agate Feb 2, 2020, 1:01 AM

#

huh this is wierd

#

Traceback (most recent call last):
  File "/usr/bin/add-apt-repository", line 11, in <module>
    from softwareproperties.SoftwareProperties import SoftwareProperties, shortcut_handler
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 28, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'

vast topaz Feb 2, 2020, 1:02 AM

#

sudo apt install python-apt first maybe?

slender agate Feb 2, 2020, 1:02 AM

#

nope

#

same thing

vast topaz Feb 2, 2020, 1:03 AM

#

Check out this Stack Overflow answer https://stackoverflow.com/a/57147858/5622383

#

and the one below it that explains why it happens

slender agate Feb 2, 2020, 1:05 AM

#

im getting another error after doing that now

#

Traceback (most recent call last):
  File "/usr/bin/add-apt-repository", line 11, in <module>
    from softwareproperties.SoftwareProperties import SoftwareProperties, shortcut_handler
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 67, in <module>
    from gi.repository import Gio
  File "/usr/lib/python3/dist-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib/python3/dist-packages/gi/__init__.py)

ocean bay Feb 2, 2020, 1:07 AM

#

can bash & zsh co-exist in the same machine?

uneven silo Feb 2, 2020, 1:12 AM

#

yes

ocean bay Feb 2, 2020, 1:15 AM

#

am i correct in assuming most of extra functionalities/ease of use in zsh is often from frameworks like ohmyzsh?

uneven silo Feb 2, 2020, 1:33 AM

#

not really

#

zsh is an entirely different shell

#

it's "bash-compatible" but still different

#

oh-my-zsh does have plugin support, but that's separate from the shell itself

solid drift Feb 2, 2020, 4:48 AM

#

Hi, what is the best IDE for Python on Linux?

#

python

orchid steeple Feb 2, 2020, 5:32 AM

#

there's no best ide

#

it's all based on preference

#

!tools

shy yokeBOT Feb 2, 2020, 5:33 AM

#

Tools

The Tools page on our website contains a couple of the most popular tools for programming in Python.

orchid steeple Feb 2, 2020, 5:34 AM

#

i'd say pick one and try it out. if you like it, keep it. if you don't, try another

#

this conversation would be more suited for #tools-and-devops though

solid drift Feb 2, 2020, 6:11 AM

#

Thanks, I'll start watching with Pycharm, then I will continue

steel verge Feb 2, 2020, 8:47 AM

#

I personally prefer VS Code, because it simple and slick. PyCharm is mighty and clunky, but powerful. Some things work better there than with VS Code, but you have to really learn it. VS Code is as simple as install and go, figure the rest out while doing it.

solid drift Feb 2, 2020, 9:35 AM

#

Thanks, yes, I worked half a day on Pycharm and it’s really slow and uncomfortable, now I’ll try VS Code.

main olive Feb 2, 2020, 10:16 AM

#

Hello guys

#

📎 Screenshot_2020-02-02-13-14-26-59.png

#

Got this Problem
Any one that can help?

frozen lodge Feb 2, 2020, 10:32 AM

#

i think that means u need to create another partition for debian os. or u r trying to install debian on the drive that has already window installed in it

main olive Feb 2, 2020, 10:32 AM

#

I maded another partition

frozen lodge Feb 2, 2020, 10:33 AM

#

maybe just try to create a new partion from the remaining space on ur drive c and install it

#

nvm then haha

main olive Feb 2, 2020, 10:33 AM

#

And copy linux to it and then install

frozen lodge Feb 2, 2020, 10:33 AM

#

ye

#

or just us vm

#

i installed it on external drive lol

main olive Feb 2, 2020, 10:34 AM

#

I will restart and check again

sharp shell Feb 2, 2020, 10:40 AM

#

this isn't related to python, we aren't a general tech help server so please don't use the topic channels for this

main olive Feb 2, 2020, 10:40 AM

#

Still not working

#

Ok

#

Can i use this one?

sharp shell Feb 2, 2020, 10:41 AM

#

no

main olive Feb 2, 2020, 10:41 AM

#

Ok which one?

sharp shell Feb 2, 2020, 10:41 AM

#

it's off topic to this entire server, so an off topic channel maybe, but don't feel entitled to assistance on it as it's not what the server is for

main olive Feb 2, 2020, 10:41 AM

#

K Can u help me in dm than

#

Please

sharp shell Feb 2, 2020, 10:42 AM

#

no

steel verge Feb 2, 2020, 10:58 AM

#

How are you trying to install it? In WSL or just plain into windows?

#

I'd really recommend WSL if you need a linux inside your windows

sharp shell Feb 2, 2020, 10:59 AM

#

please don't attempt to bring it up again after we've told them to move away from this channel

steel verge Feb 2, 2020, 11:00 AM

#

Why tell him that in the first place? If he tries to get a server up for flask it is on topic

sharp shell Feb 2, 2020, 11:02 AM

#

if you'd like to discuss the choice of staff redirecting the convo, you're welcome to dm me since i'm the one that did it, but don't disregard the instruction and continue anyway

steel verge Feb 2, 2020, 11:02 AM

#

Dude, seriously, chill. I just read the issue not the whole conversion.... wtf

#

BUt you are free to ban for me attempting to help a fella out

sharp shell Feb 2, 2020, 11:03 AM

#

it was redirected to an ot channel, you're still able to help them there, i'm just asking you to simply not ressurect it here again.

#

i haven't given you a warning/infraction over anything either

steel verge Feb 2, 2020, 11:04 AM

#

Well you told him to offtopic and told him there he cant post there either

#

that is just wrong seriously

#

way to bully a guy looking for help

#

because he wants to learn

main olive Feb 2, 2020, 11:08 AM

#

that's fine, I just don't think this is exactly the best server for it

tidal lark Feb 2, 2020, 5:30 PM

#

@orchid steeple: "there's no best ide"

The very beginning on that site:
PyCharm
The very best Python IDE finger_gun

#

But I get what you're saying

orchid steeple Feb 2, 2020, 5:31 PM

#

xD didn't notice that

tidal lark Feb 2, 2020, 5:35 PM

#

Btw, Is Linux still a good to go OS? I mean, in earlier days it was kind of the special one but with windows 10 now, didn't it become obsolete? I'm kinda familiar with Windows 10 now but still thinking about switching to debian, though I've never tried linux before. Is there any great advantage that you get from using linux or why do you use it?

main olive Feb 2, 2020, 5:55 PM

#

i'm curious as to why you think linux is obsolete when 95% of servers (for the top 1 million domains) run linux, 85% of phones run linux, 100% of supercomputers run linux, etc

#

it's more alive than ever and only increasing in popularity

#

why i use it personally? Windows is a buggy mess and provides me no advantages over what I do, 90% of my job requires using linux, it makes setting up a development environment incredibly easy, is much, much more customisable than windows ever will be, etc

#

@tidal lark

tidal lark Feb 2, 2020, 6:00 PM

#

I didn't know that @main olive. So it is recommended to switching over to Linux, I guess? I've never gone in depth with it and that may be why I had the plain thought of Linux as an obsolete OS.

main olive Feb 2, 2020, 6:00 PM

#

sources for statistics btw:

phones: https://www.idc.com/promo/smartphone-market-share/os
supercomputers: https://www.top500.org/lists/2019/06/
servers: https://web.archive.org/web/20150806093859/http://www.w3cook.com/os/summary/

IDC: The premier global market intelligence company

IDC - Smartphone Market Share - OS

IDC examines consumer markets by devices, applications, networks, and services to provide complete solutions for succeeding in these expanding markets.

#

recommended?

#

it depends on what you do and what you want out of your computing experience

#

if you're the average user who just wants to play games and browse the web, windows is fine for you

#

if you consider yourself a more tech-savvy computer user, getting familiar with linux is highly recommended

tidal lark Feb 2, 2020, 6:03 PM

#

What version are you using? I'm pretty much only using my computer for learning python and later, hopefully, ml. I would like to become more familiar with coding in general, I've come across many coders that are using Linux. I really don't know to what extent I can use either of them and I don't know how to get an overview of it

main olive Feb 2, 2020, 6:04 PM

#

I personally use Arch on my work laptop, but it's only recommended for users who are already quite familiar with Linux, how it works, and how to set it up

#

for example, it doesn't provide a graphical interface by default whatsoever

#

it's up to the user to decide what they want to use and install it

#

for new users, I've always recommended Kubuntu

#

it's a version of Ubuntu which comes with the KDE Plasma interface, which is quite nice to use and somewhat similar to the Windows experience

#

Ubuntu, in turn, is based on Debian

tidal lark Feb 2, 2020, 6:05 PM

#

I'm also into GUIs n stuff, I really like having a nice UI experience whatsoever. I've never used the python3 editor but always an IDE

main olive Feb 2, 2020, 6:06 PM

#

Debian is also good, but it's bland and aims for stability so packages are not updated unless specifically warranted

sage solar Feb 2, 2020, 6:06 PM

#

(or the debian major version is bumped)

main olive Feb 2, 2020, 6:06 PM

#

I do recommend Kubuntu if a nice UI is your thing

#

@sage solar which happens like

#

once a century

tidal lark Feb 2, 2020, 6:06 PM

#

So I wouldn't say that I'm really familiar with computers (software and hardware) but I would like to really become more familiar with such

sage solar Feb 2, 2020, 6:06 PM

#

nah

#

usually happens all 2 years

main olive Feb 2, 2020, 6:07 PM

#

Linux is a good crash course for it then :)

tidal lark Feb 2, 2020, 6:07 PM

#

I will try it out on my virtual box

main olive Feb 2, 2020, 6:07 PM

#

eh, I mean

sage solar Feb 2, 2020, 6:07 PM

#

since 3.1 its being all 2 years

#

(and yes early debian had minor versions i am amazed myself)

main olive Feb 2, 2020, 6:08 PM

#

using a VM is a good start if you don't want to replace windows entirely, but... it doesn't often provide a good first impression as VMs are often laggy and the integration isn't as nice

#

I recommend installing Linux besides Windows on separate partitions, so you can choose whether to boot into windows or linux when starting up your PC

tidal lark Feb 2, 2020, 6:08 PM

#

I do have a laptop

#

And speaking of which, is there a crash course that could fit my "non specified" expectations?

sage solar Feb 2, 2020, 6:10 PM

#

i wouldnt say that linux is coverable by a crash course, it always depends on what you want to do with it

tidal lark Feb 2, 2020, 6:11 PM

#

That's what I thought and I don't really have anything in particular for that kind of use. Just want to become more familiar, as already said, but not being employed,(highschool) I haven't yet specified myself. The only thing that I know I want to do is learning machine learning

sage solar Feb 2, 2020, 6:12 PM

#

well then get it yourself and once you wonder how can i do x or whats the best pratice for y ask / google / do a 'man command'

#

(btw where are the backticks on a us layout?)

tidal lark Feb 2, 2020, 6:13 PM

#

right there: `

sage solar Feb 2, 2020, 6:13 PM

#

🙄

tidal lark Feb 2, 2020, 6:14 PM

#

finger_gun_dank

#

I'll give Kubuntu a try then, thx

sage solar Feb 2, 2020, 6:15 PM

#

aaaah

#

test

#

now....where is that key on a 60% layout....

tidal lark Feb 2, 2020, 6:15 PM

#

But I can still use chrome and all that stuff, right? Because I've heard that .exe's are not supported there.

sage solar Feb 2, 2020, 6:16 PM

#

yes linux has their own binary formats

#

and the majority of software thats not games and not media (photoshop adobe etc) is gonna be on linux

tidal lark Feb 2, 2020, 6:16 PM

#

Great !

sage solar Feb 2, 2020, 6:17 PM

#

funnily neough some old windows games are supported by wine (a linux runtime for windows) better than by windows 10

tidal lark Feb 2, 2020, 6:22 PM

#

Since when are you using and why did you decide switching to it @sage solar ?

sage solar Feb 2, 2020, 6:22 PM

#

i am now 17 and using linux and OpenBSD since ive been working and uh.......must have been lemme think....

#

after i was 13

#

and before i was 15

#

so

#

2-3 years i guess

#

i dont remember why anymore though

tidal lark Feb 2, 2020, 6:24 PM

#

Alright, cool. I'm 18 now and just really getting into coding

#

What are the languages that you're using?

#

Ah, well, I'm on a python discord server

sage solar Feb 2, 2020, 6:25 PM

#

for private projects im sticking to rust and python mostly.....at work whatever is required so far uhhh:
perl
C
bash/shell scripts
ruby
python

tidal lark Feb 2, 2020, 6:26 PM

#

I've got some questions but don't want to flood the channel with it, so could we start a private chat?

sage solar Feb 2, 2020, 6:26 PM

#

feel free to flood the chat while its topic related

#

and if it isnt feel free to go to ot0-2

tidal lark Feb 2, 2020, 6:28 PM

#

I wanted to know what you're mainly doing at your job as I'm about to finish school and don't know if I should apply for a job or go into depth with machine learning at a university

sage solar Feb 2, 2020, 6:28 PM

#

thaats probably ot then

digital haven Feb 2, 2020, 7:38 PM

#

what's the easiest way to get $PWD with ~/ at the start rather than an absolute path

sage solar Feb 2, 2020, 7:44 PM

#

@digital haven why would you even want that? that seems like asking for a solution to an artiffial problem youre maing up to solve something else

digital haven Feb 2, 2020, 7:45 PM

#

@sage solar because i wanted to make the prompt output smaller

#

if i'm in a few nested dirs it's a bit much, and i don't ever need to see the first couple of dirs

#

nearly anything is going to be a solution to a problem which isn't exactly what is asked though as, unless you're in the room with me, i kinda have to abstract things a bit to describe them here

#

so i'm not sure what your point is there @sage solar 🤔

sage solar Feb 2, 2020, 7:47 PM

#

well in your case i guess thats the actual problem but i cant think of others than UX that would require you to do this so i was guessing you might just be making it difficult for yourself

#

anyways

#

im afraid if thats your actual problem i dont think there is a clean way of doing it apart form pattern matching

digital haven Feb 2, 2020, 7:48 PM

#

no, just that the prompt is kinda long, i have the dir and the git repo in the prompt so it can get a bit smushed up

#

bash is rank

oak shell Feb 2, 2020, 7:50 PM

#

You could try realpath -s --relative-base ~ "$PWD"

#

-s suppresses symlink lookup, and --relative-base ~ will make it return a relative path (only) if it's inside that base directory, else absolute.

#

It won't prefix the output with ~/ though. You either get absolute paths starting with / or relative paths inside your home without a leading slash

digital haven Feb 2, 2020, 7:56 PM

#

@oak shell oh, thanks, i'll try. Not having ~/ really doesn't matter 🙂 i just thought that might be the most straightforward approach

#

yes that works 👍

main olive Feb 2, 2020, 8:53 PM

#

if you do really want the ~/, you could do echo "~/$(realpath -s --relative-base ~ "$PWD")"

oak shell Feb 2, 2020, 9:06 PM

#

no, then it would also apply that to folders outside the home

main olive Feb 2, 2020, 9:08 PM

#

oh yeah

#

sorry i'm very tipsy rn

umbral tulip Feb 3, 2020, 1:08 AM

#

Anyone know some c?

#include <stdint.h>
#include <stdio.h>

uint64_t THING[] = {51, 52, 53, 54, 55};

void print_len(uint64_t *arr)
{
    printf("%lu\n", sizeof(arr));
    printf("%lu\n", sizeof(*arr));
}

int main(void)
{
    printf("%lu\n", sizeof(THING));
    printf("%lu\n", sizeof(*THING));
    print_len(THING);
    return 0;
}

I'm trying to figure out why this prints

#

Oof, found it

#

https://wiki.sei.cmu.edu/confluence/display/c/ARR01-C.+Do+not+apply+the+sizeof+operator+to+a+pointer+when+taking+the+size+of+an+array

uneven silo Feb 3, 2020, 1:24 AM

#

yea

#

array
pointer
pointer
pointer to pointer

umbral tulip Feb 3, 2020, 1:26 AM

#

It's just kinda weird that there's all these traps in c and no warnings. Some things are impossible, but it should be possible AFAIK for the compiler to warn when doing sizeof on an array declared in a different scope

uneven silo Feb 3, 2020, 1:27 AM

#

its not a trap

#

how should it know what you meant

#

also, how did you compile it?

warped nimbus Feb 3, 2020, 1:31 AM

#

This isn't the place to ask for help with C code

#

Being a Python server and all

#

You should move the discussion to an off topic channel

solid drift Feb 3, 2020, 1:20 PM

#

C code:/

regal stump Feb 3, 2020, 7:05 PM

#

Hey. I am developing some Sublime Text plugins. I am trying to debug the whole process with pdb but I only get output in Sublime as there is no input for console. I am trying to run Sublime from terminal to get log / feed + console from sublime process but somehow sublime is launched and nothing displayed in terminal. When I lunch any GUI app i usually see all the longs and have session.

Do you know how would I lunch it so that I can debug it with pdb ?

#

This is sublime lunch script :

$ cat /usr/bin/subl 
>>>
#!/bin/sh
exec /opt/sublime_text/sublime_text --fwdargv0 "$0" "$@"

#

I know that people sometimes have opposite problem when they want to disown or nohup but for me console access is desirable in this case and it doesn't happen by default.

#

So I can't find help anywhere because usually people are looking for opposite https://askubuntu.com/questions/439187/how-to-open-a-gui-application-and-disconnect-it

#

Like here.

regal stump Feb 3, 2020, 8:50 PM

#

Solved with remote debugger > https://pypi.org/project/rpdb/0.1.1/

PyPI

rpdb

pdb wrapper with remote access via tcp socket

full oriole Feb 4, 2020, 1:11 PM

#

echo "thi sisthat" | grep -E '([[:alpha:]]+ ?)'
This return the string, but it doesn't seem like it should since the ? states a space should be zero or once, but the string has two spaces?

main olive Feb 4, 2020, 1:24 PM

#

it matches two times

#

thi (space) and sisthat

#

as two separate groups

#

as grep prints the entire line, this will seem like it's one match

#

try grepping with the -o flag

#

@full oriole

full oriole Feb 4, 2020, 1:26 PM

#

Ah. Got it.

#

yep. Thanks @main olive

main olive Feb 4, 2020, 1:27 PM

#

👍

split pulsar Feb 5, 2020, 4:13 PM

#

I have a systemd service that runs docker container, I also have a python service that restarts this container using docker HTTP API when webhook is received.
It looks like sometimes systemd decides that container dies and tries to restart it at the same time.
It results in weird message like Feb 05 17:08:26 vmi335610.contaboserver.net docker[474846]: /bin/docker: Error response from daemon: endpoint with name modbay-worker.service already exists in network bridge.
It happened multiple times already and the only working fix I've found is restarting entire docker daemon.

Can this be fixed somehow? Maybe my setup is wrong and I should not use systemd at all?

main olive Feb 5, 2020, 5:09 PM

#

if you're managing it with systemd, you shouldn't try to restart it directly

#

get your webhook to intiate a systemd restart instead

split pulsar Feb 5, 2020, 5:12 PM

#

The problem is my python service responsible for webhook processing is also in docker, it has docker socket mounted inside

split pulsar Feb 5, 2020, 6:48 PM

#

I guess I'll have to move logic from systemd to my python supervisor

deft raft Feb 6, 2020, 8:25 AM

#

Any suggestions as to why we're timing out when trying to connect to an app hosted on a centos 7.7, running puppet boxes with these ```firewall_rules:

'030 allow all on docker rfc1918':
proto: 'tcp'
action: 'accept'
source: [ '172.16.0.0/12' ]

'050 allow http/https from all':
dport: [ 80, 443 ]
proto: 'tcp'
action: 'accept'
source: [ '129.177.0.0/16' ]

'051 allow 5555':
dport: [ 5555 ]
proto: 'tcp'
action: 'accept'
source: [ '129.177.0.0/16' ]

#

I'm suspecting it's the os/vm ignoring/blocking requests as there are no logs in the docker containers indicating activity

digital haven Feb 6, 2020, 12:31 PM

#

is there a simple approach to navigating to the project root from a dir? Here the project root contains as .git dir

main olive Feb 6, 2020, 1:24 PM

#

@digital haven pushd/popd or look into warpdrive

#

or alias something to cd $(git rev-parse --show-toplevel)

digital haven Feb 6, 2020, 1:37 PM

#

@main olive hmm, I'll need to know it still.

I was thinking of something like

While .git not in is.listdir(): is.chdir(..)

#

*os

main olive Feb 6, 2020, 1:38 PM

#

what's wrong with the command I posted?

main olive Feb 6, 2020, 2:15 PM

#

Is there any tool for linux that will stop the execution of a process, once certain number of lines were printed? I am using subdomain enumeration tools, and sometimes I want to lets say only retrieve 1k subdomains, instead of 20k which will take a long time to finish, so i want the process to be terminated by the time it prints 1000 lines automatically.

#

head will do that

#

📎 Screenshot_20200206-162244.png

#

(yes only prints 5 lines thanks to head and terminates - usually, yes keeps going forever)

#

@main olive

#

@main olive thanks, just tested it out

#

works great combined with tee as well

#

never really dealt with more than 1 pipeline in 1 command before, but works fine

#

pipes can get crazy complex

#

yeah i also just noticed that it's better to put head after the first pipe

#

getsubdomains google.com | tee -a subdomains | head -n 100 printed out about 120 subdomains instead of 100 cause output gets parsed from tee to head and therefore little delay before the termination

#

i switched the placement of tee and head and now it does terminate after 100

#

thanks once again

#

np dog

#

or, er, cat

minor ferry Feb 6, 2020, 3:18 PM

#

🤣

digital haven Feb 6, 2020, 3:25 PM

#

@main olive oh, nothing sorry i didn't register, that's nice yes 🙂

#

yes | head -n5 i didn't realise space wasn't needed after n

#

i also didn't realise that i didn't have to write echo yes | head -n 5

main olive Feb 6, 2020, 3:29 PM

#

@digital haven GNU argument standard states that shorthand flags (ie -n and not --this) don't require spaces before the value, if it takes any

#

and you can chain shorthand flags together

digital haven Feb 6, 2020, 3:30 PM

#

@main olive so you shouldn't put space?

#

because it works with both and space reads nicer to me, i guess

main olive Feb 6, 2020, 3:30 PM

#

you can, just as you can write ls -a -l instead of ls -al

#

but you don't have to

digital haven Feb 6, 2020, 3:31 PM

#

they seem different to me - -al is grouping flags, whereas -n 5 is a flag and its argument

#

that's to me - i'm not saying I'm right there

main olive Feb 6, 2020, 3:33 PM

#

I think head -vn5 is prettier than head -vn 5

digital haven Feb 6, 2020, 3:33 PM

#

fair, i guess it has the advantage of saving space

main olive Feb 6, 2020, 3:33 PM

#

it's a matter of taste really

digital haven Feb 6, 2020, 3:34 PM

#

yea, just wondering if there's any recs as it's not something i know much about...if it's pure choice then whatever works i suppose

main olive Feb 6, 2020, 3:35 PM

#

if you wanna read more about what GNU recommends, https://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html

Argument Syntax (The GNU C Library)

digital haven Feb 6, 2020, 3:36 PM

#

hrm, i'm always confused with this as i don't think i really care about posix, as i use zsh and stuff (which is for the most part i think? Its just not something i have to be concerned about)

#

may or may not appear as separate tokens
seems they don't really care either 😄

main olive Feb 6, 2020, 3:38 PM

#

it just means both are acceptable

#

what you use is up to preference :)

static mountain Feb 6, 2020, 3:59 PM

#

How can i upgrade my python version on ubuntu? to 8.1
from 3.6.9

main olive Feb 6, 2020, 4:00 PM

#

look into pyenv

main olive Feb 6, 2020, 9:02 PM

#

@main olive hi again, head works like a charm, but do you by any chance also know a command that will let the command run for x seconds then terminate it

#

as in command | wantedtool 10 where i'd want command to be terminated after 10 seconds

#

off the top of my head, something like this should work

myweirdcommand & PROCID=$!; sleep 10; kill $PROCID

#

ie run myweirdcommand in the background (operator &), save the last process' PID ($!) as PROCID, sleep for 10 secs, kill the process listed as PROCID

uneven silo Feb 6, 2020, 9:12 PM

#

^^ i was thinking of something similar, but forgot the magic var for pid

#

you might want bg tho idk

main olive Feb 6, 2020, 9:12 PM

#

actually

#

much easier

#

coreutils has timeout built in

#

timeout 2 yes lets yes run for 2 secs

uneven silo Feb 6, 2020, 9:12 PM

#

the above does work

#

can confirm

#

both work

main olive Feb 6, 2020, 9:23 PM

#

@main olive timeout 2 yes does work

#

i was aware of that one

#

but lmao

#

I am sooo into pipes rn

#

it just looks better structurally

#

you know

dusty basalt Feb 7, 2020, 12:54 PM

#

anyone knows of a wxPy version that works with Raspbian?

zinc brook Feb 8, 2020, 11:48 AM

#

📎 unknown.png

#

Why do I have multiple instances of the same journalctl and also under root when I don't use the root account?

main olive Feb 8, 2020, 11:56 AM

#

@zinc brook who called them?

#

pstree -hp

zinc brook Feb 8, 2020, 11:58 AM

#

Well, I did call these journalctl, but was hours ago and under my own user account rather than roo.

main olive Feb 8, 2020, 12:01 PM

#

but you used sudo

#

sudo = run as root

#

(unless you specify another account with -u)

#

and -f in journalctl means "follow", which leaves the log open until it's SIGINT'd

#

you can probably just sudo killall journalctl

zinc brook Feb 8, 2020, 3:16 PM

#

Hmm I see, I'll do that. For some reason I have some ffmpeg instances running there from my bot when it's not being used.

digital haven Feb 8, 2020, 8:13 PM

#

apparently on fish i can have an alias that'll fill out so that i can search in history and the full command is there, I'm wondering what this is called? As, presumably, there exists such a thing in zsh (which i use)

#

so i'm wondering if anyone knows what it's called, fish expansion didn't work in google

#

like in vim you can create abbrevs, ah, that's probably it ha

somber stirrup Feb 8, 2020, 9:20 PM

#

Yep https://fishshell.com/docs/current/commands.html

digital haven Feb 9, 2020, 11:46 AM

#

@somber stirrup sorry - i was asking for this in zshell, thanks though

digital haven Feb 9, 2020, 7:03 PM

#

i have a command that'll take me back to the project root

# nav to the root of a repo
cdr_funct (){
    pushd $(git rev-parse --show-toplevel)
    clear
}
alias cdr=cdr_funct

What I would like to be able to do is easily navigate back to wherever I was when I entered cdr.

If I enter cdr, then move about a bit, i will have to enter popd a few times to get back to where I was, is there any way around this?

fickle granite Feb 9, 2020, 7:04 PM

#

don't think so

#

you could "cd" instead of "pushd", and then "cd -" to get back

#

but that only "remembers" "one level"

#

hard to explain

digital haven Feb 9, 2020, 7:05 PM

#

hrm - problem is i'm often moving around after cdr, and then want to nav back to wherever i was

fickle granite Feb 9, 2020, 7:05 PM

#

popd seems like the right thing then

digital haven Feb 9, 2020, 7:05 PM

#

just enter it a few times?

fickle granite Feb 9, 2020, 7:05 PM

#

I guess

digital haven Feb 9, 2020, 7:05 PM

#

could be like, 6 or so, hrm

fickle granite Feb 9, 2020, 7:05 PM

#

you could have separate shell windows for each directory of interest.

#

Of course then they wouldn't share history 😐

digital haven Feb 9, 2020, 7:05 PM

#

that sounds like a nightmare

fickle granite Feb 9, 2020, 7:06 PM

#

funny how little stuff like this occupies so much of our time (I have my own problems like this, and my own solutions)

digital haven Feb 9, 2020, 7:06 PM

#

i was just thinking that, and convinced myself that it WAS important 🤦

fickle granite Feb 9, 2020, 7:06 PM

#

maybe have a few aliases that go straight to whatever directory you want? Assuming you have only a few such directories?

#

or, use C-r to search for a recent "cd" command, so that you don't have to type it all out?

digital haven Feb 9, 2020, 7:07 PM

#

changes depending on project though, so i can't have fixed. I use C-r, it's nice, but i can't get back like that a lot of the time

fickle granite Feb 9, 2020, 7:08 PM

#

the most useful thing I've found is to spend an hour or two sitting next to someone else, while you solve some problem together -- and notice how they do this sort of thing. Everyone seems to do something different, and other people often have interesting techniques that I'd have never thought of on my own

digital haven Feb 9, 2020, 7:09 PM

#

no one else uses stuff like vim so i'd probably end up doing stuff in finder : ' (

fickle granite Feb 9, 2020, 7:10 PM

#

ha, I use Emacs, and am similarly lonely 🙂

digital haven Feb 9, 2020, 7:10 PM

#

I'm going for

alias p1="popd"
alias p2="popd;popd"

🌚

#

etc

fickle granite Feb 9, 2020, 7:17 PM

#

you could probably have an alias or function that takes a number, and pops that many directories. But how on Earth would you know the right number?

#

To me, it'd be better to have a way of displaying your directory stack, and then just pointing to the entry you want to go to

#

I've never seen that, but I wouldn't be surprised if zsh has something like that

digital haven Feb 9, 2020, 7:18 PM

#

why will this work in the shell but not as an alias:

echo $(dirs | sed 's/ /\\n/g')

#

this doesn't work though :
alias x="echo $(dirs | sed 's/ /\\n/g')"

#

@fickle granite ah, yeah - that's what i'm trying to do here actually 😅

#

i don't really get why i can't make an alias like this tho

#

ah - it evaluates 🤦

#

 130 function dirr_funct() {
 131     echo $(dirs | sed 's/ /\\n/g')
 132 }
 133 alias dirr=dirr_funct

that works

#

echo $(dirs | sed 's/ /\\n/g') | cat -n

🤔

oak shell Feb 9, 2020, 7:23 PM

#

you don't need an alias if you have a function anyway

digital haven Feb 9, 2020, 7:23 PM

#

ah, fair 🤦

#

i'm not sure how i'd make the popd function a particular number of times tho

oak shell Feb 9, 2020, 7:24 PM

#

why do you even pass the pipe output to echo anyway?

digital haven Feb 9, 2020, 7:24 PM

#

didn't work without it i dont' think

fickle granite Feb 9, 2020, 7:24 PM

#

@digital haven I have never figured out aliases; I use functions exclusively

#

in fact, here are the first few lines of my .bashrc:

# Many OS's pollute one's shell with weird-ass aliases.  I never use
# them.
unalias -a

digital haven Feb 9, 2020, 7:25 PM

#

😄

fickle granite Feb 9, 2020, 7:25 PM

#

true story

digital haven Feb 9, 2020, 7:25 PM

#

I use both, in the worst way possible ( as i just learnt )

oak shell Feb 9, 2020, 7:26 PM

#

what do you even want to achieve with this thing?

#

btw it breaks if your pushed directories contain spaces...

digital haven Feb 9, 2020, 7:27 PM

#

btw it breaks if your pushed directories contain spaces...
yeah, pretty sure i don't have any - i'll just take the hit if i do at any point

#

i'm not sure how to pass an arg to popd so it'll act a set number of times

oak shell Feb 9, 2020, 7:27 PM

#

I think you want dirs -p (see help dirs)

digital haven Feb 9, 2020, 7:28 PM

#

idk if i have that on osx

#

it's not in the man page at least

fickle granite Feb 9, 2020, 7:28 PM

#

use the gnu tools if not

oak shell Feb 9, 2020, 7:28 PM

#

also popd understands +N and -N (N being a number)

#

help popd

fickle granite Feb 9, 2020, 7:28 PM

#

or brew install bash (or your favorite shell)

#

yeah pushd and popd are shell builtins; nothing to do with coreutils

oak shell Feb 9, 2020, 7:29 PM

#

but yeah, that's Ubuntu / bash 4.3

#

Mac has some ancient bash by default iirc

digital haven Feb 9, 2020, 7:29 PM

#

i use zshell

oak shell Feb 9, 2020, 7:29 PM

#

ok, dunno about z

digital haven Feb 9, 2020, 7:29 PM

#

Mac has some ancient bash by default iirc
yeah it sucks - the find tools and stuff are crap as well

oak shell Feb 9, 2020, 7:29 PM

#

those are the bsd versions instead of gnu. not the shell itself

fickle granite Feb 9, 2020, 7:29 PM

#

homebrew to the rescue

#

can't use a mac without it, imho

digital haven Feb 9, 2020, 7:30 PM

#

i do have that - i think i've done that command as well

#

(any thing i should run to check?)

fickle granite Feb 9, 2020, 7:30 PM

#

type -a zsh

#

although ... that might not work in zsh 🙂

digital haven Feb 9, 2020, 7:31 PM

#

presumably i shouldn't see BSD at the top of things

📎 unknown.png

#

-> % type -a zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /usr/local/bin/zsh
zsh is /bin/zsh

fickle granite Feb 9, 2020, 7:31 PM

#

wow

digital haven Feb 9, 2020, 7:31 PM

#

🙃

fickle granite Feb 9, 2020, 7:31 PM

#

your PATH is polluted with duplicates

#

at least, that's my guess

#

$ ls -l /usr/local/bin/bash
lrwxr-xr-x 1 brew admin 30 2019-10-01T17:29:11-0700 /usr/local/bin/bash -> ../Cellar/bash/5.0.11/bin/bash*
$

#

evidence that I'm using bash from homebrew

digital haven Feb 9, 2020, 7:33 PM

#

hrm yeah it really is

#

i just ran echo $PATH

fickle granite Feb 9, 2020, 7:33 PM

#

I have this whole Rube Goldberg script that puts directories on PATH but only if they're not already there. I couldn't believe there wasn't a built-in way to do that, but I never found one, so ... Rube Goldberg it is

digital haven Feb 9, 2020, 7:35 PM

#

i guess i have just put things onto path and the path is in the path so the others are put on again, or something, i'm not sure

#

export PATH=/usr/local/bin:$PATH:$HOME/bin
export PATH="/usr/local/opt/python/libexec/bin:$PATH"

#

is that obviously wrong?

#

i'm not sure why one has quotes now

#

@fickle granite https://til.hashrocket.com/posts/7evpdebn7g-remove-duplicates-in-zsh-path

not sure if that's of interest to you

Today I Learned: Remove duplicates in zsh $PATH

How to do it?

fickle granite Feb 9, 2020, 7:39 PM

#

sigh Unix kinda sucks, much as I love it

digital haven Feb 9, 2020, 7:40 PM

#

:<

#

this path stuff specifically?

fickle granite Feb 9, 2020, 7:40 PM

#

that TIL thing won't work for me because I don't use zsh 🙂

#

well, computers suck in general

digital haven Feb 9, 2020, 7:40 PM

#

ah, yeah - maybe general knowledge though 🙃

fickle granite Feb 9, 2020, 7:40 PM

#

otoh, that's why they pay us the big bucks®️

digital haven Feb 9, 2020, 7:40 PM

#

i wasn't sure if there was something more underlying about this PATH thing that you were thinking sucked

#

i don't really get why it's a hassle... it just is

#

(to me)

fickle granite Feb 9, 2020, 7:41 PM

#

some combination of history, inertia, laziness

#

and also it's astonishingly hard to write a system like this that is genuinely useful, so most people don't try, and those who try generally fail

#

bad as Unix is, it's close to the best imaginable

#

what a scary thought

#

Microsoft gets points for powershell.

#

I have never used it, so maybe I'd hate it; but at least they gave it a good try

#

it probably cost them tens of millions to develop btw

digital haven Feb 9, 2020, 7:49 PM

#

i've heard that powershell is kinda nice, for some things at least

#

i was tempted to try fish, but couldn't be bothered

#

zshell seemed like middle ground

fickle granite Feb 9, 2020, 7:50 PM

#

I use bash because I'm old and set in my ways

#

and have a .bashrc that's about one bazillion lines long, and I'm too lazy to "port" it

digital haven Feb 9, 2020, 7:52 PM

#

i think most would just work in zsh, but yeah i can get that

#

tab completion in zsh is amazing though, i can't leave now

#

Oh - path is filled each time i source my config

#

i thought that it would just be replaced

fickle granite Feb 9, 2020, 7:58 PM

#

it bugs me that some shells have two path variables. My life isn't complicated enough already?

main olive Feb 9, 2020, 8:40 PM

#

@digital haven yes, unless you PATH='' anywhere, PATH will most probably be appended instead of replaced

digital haven Feb 9, 2020, 8:41 PM

#

(edit)

main olive Feb 9, 2020, 8:41 PM

#

sorry, prematurely pressed enter

digital haven Feb 9, 2020, 8:41 PM

#

no worries

#

@main olive fair - have that command at the end of zshrc now, so i think it's ok

main olive Feb 9, 2020, 8:42 PM

#

also, yeah, I agree, tab-completion is pretty good

#

especially with grml

#

just.. so good

digital haven Feb 9, 2020, 8:42 PM

#

typeset -aU path

#

 139 function pops(){
 140     # having output the dir stack i might want to pop back a particular number,
 141     # this enables that
 142     i=1
 143     NUM=$(($1 -1))
 144     while [ "$i" -le "$NUM" ]; do
 145         clear
 146         popd
 147         i=$(($i + 1))
 148     done
 149     clear
 150 }

#

i ended up using this to nav a certain number of dirs down

This is what happen when I try to use any of them: sh: sudo: command not found

This is what happen when I try to use any of them:
sh: sudo: command not found