this post was submitted on 30 Apr 2024
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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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The thing with this is: its just a symlink to the
systemd-run
binary, which talks to PID1 to spawn new processes (in separate cgroups IIRC). Its one of the most fundamental parts of systemd. Even the debiansystemd
package includessystemd-run
.I guess the other question is if some tools the distro provides might switch to supporting it by default. For example on Arch there is
makepkg
that should never be executed as root, but does internally call some things with elevated privileges (mostlypacman
to install and remove packages). Currently it checks forsudo
and if not falls back tosu
, but maybe it might be worth considering changingsu
forrun0
if its guaranteed to be there.it does its authorization with polkit (which IIRC defaults to allow all
wheel
group members) and giving users that shouldn't be allowed root access, root access, is not something you ever want. This is usually referred to as unauthorized privilege escalation. Also, it isn't likesudo
doesn't need configuration.