What is POSIX? What is POSIX.1?
POSIX is a registered trademark of the IEEE. POSIX is an acronym for Portable Operating System Interface. Although originated to refer to the original IEEE Std 1003.1-1988, the name POSIX more correctly refers to a family of related standards: IEEE Std 1003.n (where n is a number) and the parts of ISO/IEC 9945. The term POSIX was originally used as a synonym for IEEE Std 1003.1-1988. A preferred term for that standard, POSIX.1, emerged. This maintained the advantages of readability of the symbol “POSIX” without being ambiguous with the POSIX family of standards. For a full listing of the project numbers see PASC Standing Document SD11. The name POSIX was suggested by Richard Stallman. It is expected to be pronounced pahz-icks, as in positive, not poh-six, or other variations. The pronunciation has been published in an attempt to promulgate a standardized way of referring to a standard operating system interface. The latest version of the POSIX.1 standard is IEEE Std 1003.
