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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OS market share in Top 500 supercomputers (feddit.org)

submitted 20 hours ago* (last edited 3 hours ago) by [email protected] to c/[email protected]

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Source: https://en.wikipedia.org/wiki/Supercomputer_operating_system
Author: https://commons.m.wikimedia.org/wiki/User:Benedikt.Seidl
Data from: http://top500.org/stats

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[–] [email protected] 6 points 6 hours ago (4 children)

I’m confused on why they separate BSD from Unix. BSD is a Unix variant.

[–] [email protected] 20 points 6 hours ago

Unix is basically a brand name.
BSD had to be completely re-written to remove all Unix code, so it could be published under a free license.
It isn't Unix certified.

So it is Unix-derived, but not currently a Unix system (which is a completely meaningless term anyway).

[–] [email protected] 5 points 6 hours ago

To make it more specific I guess, what's the problem with that? It's like having a "people living on boats" and "people with no long term address". You could include the former in the latter, but then you are just conveying less information.

[–] [email protected] 0 points 6 hours ago (1 children)

So is Linux. So I guess the light blue is all other UNIX variants?

[–] [email protected] 1 points 4 hours ago (1 children)

no, it's not

[–] [email protected] 1 points 4 hours ago (2 children)

I think this is a Ship of Theseus thing here that we're going to argue about because at what point is it just UNIX-like and not UNIX?

UNIX-like is definitely a descriptor currently used for Linux.

Even the Wikipedia entry starts that way.

[–] [email protected] 2 points 3 hours ago

It's Unix if you pay to have it certified (assuming it's compatible to begin with). That's basically it.

[–] [email protected] 1 points 4 hours ago

Yes, but it's not Unix. That's literally part of GNU/Linux' name.

Mac OS is more Unix than Linux.