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This is a list of POSIX (Portable Operating System Interface) 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.
This is a list of commands from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. 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.
command is a shell command for Unix and Unix-like operating systems. It is used to execute a command whilst suppressing normal shell function lookup. [1] It is specified in the POSIX standard and is often implemented in Unix shells as a shell builtin function. Built-in functions take precedence over programs when resolving the name of a command.
The Bourne shell, sh, was a new Unix shell by Stephen Bourne at Bell Labs. [6] Distributed as the shell for UNIX Version 7 in 1979, it introduced the rest of the basic features considered common to all the later Unix shells, including here documents, command substitution, more generic variables and more extensive builtin control structures.
JP Software command-line processors provide user-configurable colorization of file and directory names in directory listings based on their file extension and/or attributes through an optionally defined %COLORDIR% environment variable. For the Unix/Linux shells, this is a feature of the ls command and the terminal.
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Since this template affects many articles, you may wish to discuss changes on the talk page first. This should really only include standard universal commands that come with all distributions adhering to the Single UNIX Specification.
A simplified but non-POSIX conforming form of the command, command > file 2 > & 1 is (not available in Bourne Shell prior to version 4, final release, or in the standard shell Debian Almquist shell used in Debian/Ubuntu): command & >file or command > & file. It is possible to use 2>&1 before ">" but the result is commonly misunderstood. The ...