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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Making a very less privelleged user accounts (lemmy.ml)

submitted 2 weeks ago* (last edited 2 weeks ago) by LifeLemons@lemmy.ml to c/linux@lemmy.ml

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When I started linux, I heard creating seperate user accounts for specific uses only is a good step to security in linux. I haven't tried it but after seeing concerns regarding some game launchers snooping around the os, I am trying to see how hard will it be to not let them. I only know the basics of user creation through GUI.

I wont be running games by the way, but I want to have this knowledge of user accounts in linux as a linux security enthusiast. I just want to create a user account where only apps or packages will run with no root access or access to outside its home folder. Even installing apps or packages should not require root to install and must be installed in that home folder and not /usr/bin or /lib. Should be like sandbox environment. I have complete control of permisions and processes of the app. Dont say about flatpak or virtual machines, not talking about that here, just plain old linux.

Note that I am not doing this out of paronoia but as a security enthusiast. I have heard about firejail, SE linux, and WhonixOS but just scratched the surface of it.

How should I do this? I need some sources to read all about linux user accounts.

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[–] LifeLemons@lemmy.ml 2 points 2 weeks ago

Thanks for response!

Well not every app is in flatpak. Like steam gives you a .deb to download and not a flatpak. Only for this reason I said "dont say about flatpak". I would definetly use flatpak where ever possible. I was simply asking for help in linux permsions and users in case I cant run app in flatpak. It isn't a vague desire for "plain old linux" but instead a desire for when flatpaks arent possible, I need to do the same for it with plain linux.

But now I understand that these tools I mentioned arent really plain linux like I thought. I should have asked the question properly Also I didnt know firejail was like flatpak though.

So I now understand what to ask exactly.

I want to learn underlying tools which apps like flatpak and firejail use. Mainly the user permssions and filesystem permissions. Dont want to learn the application themseleves but want to do myself what these applications do in behind the scenes.

Thanks for the sources though!