this post was submitted on 09 May 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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If you dig deeper into systemd, it's not all that far off the Unix philosophy either. Some people seem to think the entirety of systemd runs as PID1, but it really only spawns and tracks processes. Most systemd components are separate processes that focus on their own thing, like journald and log management. It's kinda nice that they all work very similarly, it makes for a nice clean integrated experience.
Because it all lives in one repo doesn't mean it makes one big fat binary that runs as PID1 and does everything.