POSIX defines application programming interfaces (APIs), along with command line shells and utility interfaces, for software compatibility (portability) with variants of Unix and other operating systems. [1][2] POSIX is also a trademark of the IEEE. [1] . POSIX is intended to be used by both application and system developers. [3]

This is a list of POSIX (Portable Operating System Interface) shell commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.

Jun 18, 2020 · Optional utilities that are present only on systems supporting the associated option; see Codes for information on the options in this volume of IEEE Std 1003.1-2001. The mandatory utilities are the ones that are not marked as optional.

Mar 19, 2025 · POSIX stands for Portable Operating System Interface. It’s a family of standards specified by IEEE for maintaining compatibility among operating systems. Therefore, any software that conforms to POSIX standards should be compatible with other operating systems that adhere to the POSIX standards.

Jan 18, 2022 · POSIX is shorthand for Portable Operating System Interface. It is an IEEE 1003.1 standard that defines the language interface between application programs (along with command line shells and utility interfaces) and the UNIX operating system.

POSIX stands for "Portable Operating System Interface" and defines a set of standards to provide compatibility between different computing platforms. The current version of the standard is IEEE 1003.1 2016 and can be accessed from the OpenGroup POSIX specification .

GNU Core Utilities include basic file, shell and text manipulation utilities. Coreutils includes all of the basic command-line tools that are expected in a POSIX system.

2 days ago · POSIX or “Portable Operating System Interface for uniX” is a collection of standards that define some of the functionality that a (UNIX) operating system should support. One of these standards defines two flavors of regular expressions.

The POSIX Shell And Utilities. Compiled for The Shell Hater's Handbook. Language; intro; quoting; variables; expansion; redirection; exit status; commands; grammar; signals; Built-in.: break; continue; eval; exec; exit; export; readonly; return; set; shift; times; trap; unset; Programming; alias; bc; command; date; env; expr; false; getopts ...

Minimalistic test runner for shell scripts. It could be used with any POSIX based shell implementations.