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Definitions

Unix
An application programmer's interface implemented in many products, some of which go by the collective names of Linux & BSD. Also an abbreviation for ``Unix-like operating system''. Legally speaking, it's also a trademark.

Unix-like operating system
An implementation of the application programmer's interface called Unix.

POSIX
The official name for a standardisation of the application programmer's interface called Unix.



Gene Michael Stover 2002-02-14