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 22 hours ago* (last edited 5 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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[–] mx_smith 7 points 8 hours ago (11 children)

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

[–] [email protected] 27 points 8 hours ago (1 children)

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).

[–] arden 2 points 6 hours ago

macos is unix certified tho

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