The Portable Operating System Interface (POSIX) is a family of standards
specified by the IEEE Computer Society for maintaining compatibility ... name "
Subsystem for UNIX-based Applications" (SUA); later made deprecated in 2012 (
Windows 8) and dropped in 2013 (2012 R2, 8.1). ... Windows C Runtime Library
and Windows Sockets API implement commonly used POSIX API functions for file
, time, ...