How to put static data in ram memory with a script? | Linux For All | Page 1

cold frost Sep 30, 2022, 6:01 PM

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I want to put some static data to ram memory. I have no idea how to start. Anyone who can help?

weak merlin Sep 30, 2022, 6:03 PM

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Write a C program and use malloc?

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Be more specific, what's your goal: why do you want to store data in ram? What kind of data? Just any data or do you have something specific? What do you mean by a script? You can store something in memory when you make a variable in whatever language you want.

cold frost Sep 30, 2022, 6:06 PM

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ok so

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so i need to make a service that puts some data in ram memory

weak merlin Sep 30, 2022, 6:08 PM

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Oh I see

cold frost Sep 30, 2022, 6:08 PM

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yeah i'm just new to this so yeah

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hahaha

weak merlin Sep 30, 2022, 6:09 PM

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Well start by creating that dir

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And that html file

cold frost Sep 30, 2022, 6:09 PM

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yeah i already did that

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yeah i did that

mellow compass Sep 30, 2022, 6:09 PM

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it tells you what to do
then you just use /mnt/ramdisk or whichever other directory you choose as you would with any other directory
creating files and modifying them and that stuff

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and it will stay in ram

cold frost Sep 30, 2022, 6:11 PM

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yeah the actually problem is that i don't know how to write that service

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i mean

weak merlin Sep 30, 2022, 6:11 PM

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To run the service on startup you can use systemd: man systemctl

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Just literally follow the instructions

cold frost Sep 30, 2022, 6:12 PM

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weak merlin Sep 30, 2022, 6:16 PM

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Well you dont need to create /mnt/ramdisk everytime but you do wanna mount it and copy the data from your "hard disk"

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You should also google what a systemd wants out of a unit file

cold frost Sep 30, 2022, 6:17 PM

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ok thx i will do that

weak merlin Sep 30, 2022, 6:20 PM

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To see what cp works you can google it or check out the manual page in your shell: man cp

cold frost Sep 30, 2022, 6:21 PM

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yeah i know a little linux commands

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and i know how to make a unit file

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but yeah i'm just struggling with what i need to set in my .sh file

weak merlin Sep 30, 2022, 6:23 PM

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I think you just wanna run that mount command and then the cp the html file to the ramdisk

cold frost Sep 30, 2022, 6:24 PM

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yeah i already did that

weak merlin Sep 30, 2022, 6:24 PM

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systemctl enable servicename --now
Will enable it on boot and start the service without the need for reboot too

weak merlin Sep 30, 2022, 6:25 PM

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cold frost yeah i already did that

Yea but in the shell script

cold frost Sep 30, 2022, 6:25 PM

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ahh

weak merlin Sep 30, 2022, 6:26 PM

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Bc you wanna mount if everytime and then copy it bc ram is volatile

#How to put static data in ram memory with a script?