Category
page 1POSIX
Q14658
The Portable Operating System Interface (POSIX; ) is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems. In order to define a level of compatibility, POSIX specifies many aspects of functionality that can be classified as application programming interface (API), command-line shell, and shell commands. Originally derived from commonly-found Unix APIs, shells, and commands (partly because Unix was considered manufacturer-neutral), today many systems conform to the standard including branded Unix systems, Unix-like systems, and man
Bourne shell
command line interpreter for operating systems
The Open Group
industry consortium working for open, unified standards for Unix systems
file descriptor
abstract indicator (handle) used to access a file or other input/output resource
Single UNIX Specification
family of standards for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark
exec
execute a file (a library function and/or a system call)
stat
Unix system call
C POSIX library
specification of a C standard library for POSIX systems; includes additional functions to those introduced in standard C
process group
group of linked processes executing in a Unix-like system
Austin Group
working group for the Single UNIX Specification
exit
system call used in many computer operating systems