this post was submitted on 20 Nov 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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systemd always requires root password for poweroff and reboot commands and polkit does that for you normally when using GUI. However that problem occurs when polkit timeout runs out. I don't know the exact mechanism behind it so I cannot tell exactly when it happens. When it doesn't do that, those commands don't run via a GUI. So this is on part systemd and part the distro.