[rescue] OS X is certified UNIX

Robert Darlington rdarlington at gmail.com
Wed Jun 13 16:13:39 CDT 2007

POSIX and UNIX have little to do with each other but don't seem that
way on the surface.  POSIX is a specification for a programming
interface (API) and user interface.   I'm sure it's a heck of a lot
easier to do this on a UNIX (or UNIX like) system but UNIX isn't

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