What is POSIX? I have read the Wikipedia article and I read it every time I encounter the term. The fact is that I never really understood what it is.

Can anyone please explain it to me by explaining "the need for POSIX" too?

unix.stackexchange.comsky tv packages /questions/11983/what-exactly-is-posix – Ciro Santilli OurBigBook.com Aug 7, 2015 at 22:13 quick definition reference - whatis.techtarget.com/definition/… – parasrish Sep 12, 2017 at 11:16 Just since it might help some people: Two examples of Unix-y OSes are BSD and GNU/Linux. > BSD is a 'unix-like' complete OS, with its own kernel and its own userland (no linux kernel nor GNU). GNU/Linux and *BSD family (FreeBSD, OpenBSD and NetBSD) are 'unix-like' OS, they behave like Unix. – aderchox