this post was submitted on 28 May 2026
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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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My dude, check this out (or don't, whatever), but the NSA has a Blue Team (defense) as well as a Red Team (the one you're irrationally angry at). The NSA Blue team is responsible for securing US computer systems. Look that up on DDG.
SELinix is a MAC layer built to supplement the DAC later (traditional UNIX permissions) intended to secure things the DAC doesn't.
With it, Apache can't read /etc/password or random locations like /opt/something/somewhere. Without it, we get the Equifax data breach of 2017.
Everyone saying "I can't stand up a simple web server with SELinux running" glosses over (or ignores) the fact that if they just put their files in the default location, which has the default contexts, it works. They just get pissed that they can't serve up /some/random/location/ without fixing the context so Apache is allowed to read the files.