General questions

[ornate lark]

oh i fixed the keyboard layout

[covert cypress]

Awesome!

I'm not enough of a linux expert to give a good explanation, but I think sudo allows a user to run commands with root privileges without logging into the root account.

[ornate lark]

ah i see

[covert cypress]

Okay, for some reason, only firefox-esr is available, which is strange.

So sudo apt install firefox-esr should get you the extended support release version of the firefox web browser.

[ornate lark]

nice that worked

[ornate lark]

i mean hey it is what it is right 🤷‍♂️

[fresh oyster]

it is what it is, and that is overpriced

[ornate lark]

ok, but ⭐ apple ⭐

[fresh oyster]

apple is like a fashion brand, they have some good things but it's overpriced

[native timber]

sudo allows a user to launch a command or session as the root user, su let's you switch user (to root with the password). Sudo can be replaced with programs like doas aswell, they all achieve the same thing

[ornate lark]

I see, tthanks for explaining

[vernal kiln]

#3 Windows Hater received a thank you cookie!

[native timber]

Syscalls are pretty cool, they are like functions provided to executables to do stuff like fork processes, write to files etc, if you write assembly hello world you will learn about them

https://godbolt.org is good for looking at what different programming languages do under the hood (syscalls, assembly etc)

[ornate lark]

thanks, probably will be useful one day once i understand these stuff

[vernal kiln]

#3 Windows Hater received a thank you cookie!

[ornate lark]

do you recommend learning assembly before i get more into C and Rust?

i really want a solid foundation before i head deeper into this field

is there like a long tutorial that starts with basic information about operating systems, then teaches assembly and then C? i can learn rust later i just want the important things first

like i want it to cover all these abi gnu ffi bsd etc etc stuff

and important terminal commands

[native timber]

I'd recommend c or rust first tbh

In assembly you are completely on your own and manipulating pointers, ram, registers and the stack all by yourself

C might be easier as it still lets you do alot of it, but at a much simpler syntax

[solemn valley]

i'd recommend doing a normal flow

go with something easy and then go lower

[solemn valley]

thats the wrong way to do it, its supposed to be C -> assembly -> OS

also just saying, languages like rust make it very easy to write an OS without assembly

[ornate lark]

is that really the way to do it tho

i feel like understanding operating systems is the foremost thing to build a foundation of knowledge

[solemn valley]

you cant understanding operating systems unless you understanding its code first

C is a simple way to get started, then you could go asm which gives you machine knowledge as i call it

[ornate lark]

how long would it generally take for someone to grasp C, then assembly and then os stuff?

[solemn valley]

C can be grasped easily in a few weeks

Assembly too is easy if you start with Arm and not x86 (risc is just easier)

Also, going to quote osdev wiki, "operating system development is the last frontier for a programmer"

[ornate lark]

whats that supposed to mean?

the last thing any programmer should learn?

[solemn valley]

The last thing a programmer will ever conquer

Except maybe a compiler, but llvm made that easy

[ornate lark]

man thanks for this

[vernal kiln]

bri*ish received a thank you cookie!

[ornate lark]

https://wiki.osdev.org/Expanded_Main_Page this is the resource i've been looking for

[solemn valley]

just a reminder, osdev assumes you know intermediate knowledge about low level in general

but

its the best wiki ever

[ornate lark]

Intermediate 👀

Been skimming through it, all i see are stuff i never knew existed