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this post was submitted on 12 Jul 2023
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Linux
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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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Why rhel/cent os is such a big deal? Cant ppl just use Debian / Ubuntu / alpine?
RHEL gets enterprise support from RedHat / IBM.
Point is, if you work for some big corp, when you buy something, you want proper warranties meaning people to blame if it breaks down. I have seen corps want to pay for stuff available free just so they can point at someone if there's a problem. Ubuntu is mostly fine, Canonical does offer support, but "nobody ever got fired for choosing IBM".
The enterprise support also means security updates, which is a huge requirement for government contract work (not just US, anything military really). I've also seen requirements for use of DISA approved products. I think at the time RHEL and maybe SUSE were the only ones on the list - I'm a few years removed from having to care about this.