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*nix doesn't make sense
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From Wikipedia, the free encyclopedia
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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All that effort, when you could've just called it LUNIX.
By the way, does this expression match LUNIX? But if so, won't it also match Binux or Bunix?
Yep, it would match LUNIX and Binux, but it would not match Bunix because of the negative lookahead.