POSIX.1-2008 is simultaneously IEEE Std 1003.1 -2008 and The Open Group Technical Standard Base Specifications, Issue 7. POSIX. 1-2008 defines a standard operating system interface and environment, including a command interpreter (or "shell"), and common utility programs to support applications portability at the source code level. POSIX. 1-2008 is intended to be used by both application developer...