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An abbreviation for more or less any variety of unix system e.g. Linux, Free BSD, Solaris etc.

Used by those who have actually heard of OS's other than MS
by SilverFalcon October 10, 2004
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A modern way of expressing the Zen concept that something is simultaneously all and nothing.
This is so zen, man, it's *nix
by chadlongstaff February 14, 2007
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