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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 computing and IT acronyms, initialisms and abbreviations. 0–9. 1GL—first-generation programming language ... EUC—Extended Unix Code;
Unix (/ ˈ j uː n ɪ k s / ⓘ, YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 [1] at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. [4]
The table below lists information technology initialisms and acronyms in common and current usage. These acronyms are used to discuss LAN, internet, WAN, routing and switching protocols, and their applicable organizations. [1] [2] [3] The table contains only current, common, non-proprietary initialisms that are specific to information technology.
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.
Below are other certified Unix operating systems: [4] macOS: Heavily based on BSD, macOS is registered as certified Unix 03 brand on both versions (Intel and Apple silicon-based). SCO OpenServer: Another operating system by SCO. Registered as Unix 93 “single and Multi-processor Industry Standard Intel architecture platform”.
However, several major versions of Unix existed—so there was a need to develop a common-denominator system. The POSIX specifications for Unix-like operating systems originally consisted of a single document for the core programming interface, but eventually grew to 19 separate documents (POSIX.1, POSIX.2, etc.). [8]
Lists of acronyms contain acronyms, a type of abbreviation formed from the initial components of the words of a longer name or phrase. They are organized alphabetically and by field. They are organized alphabetically and by field.