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{{library}}'''POSIX''' or "Portable Operating System Interface" is a standard for systems that resemble [[Unix]]. The current version, [http://pubs.opengroup.org/onlinepubs/9699919799/toc.htm POSIX.1-2008], is a project of both the [[IEEE]] and the Open Group. More information is at [[wp:POSIX|POSIX at Wikipedia]].

  • POSIX defines an [[API]] for [[C]] programs, with functions such as fork(), opendir(), regcomp(), wait() and unlink().
  • POSIX also defines commands such as [[AWK|awk]], [[bc]], grep, ls, [[m4]], rm, [[sed]] and [[UNIX Shell|sh]].

The pages in this category have examples marked {{libheader|POSIX}}. These examples require some of the POSIX functions; a [[C]] or [[C++]] example that calls fork() would be in this category. Some languages, like [[Ada]] or [[Perl]], have a POSIX library.

POSIX threads go in [[:Category:pthread]]. [[Category:Encyclopedia]]