directory command to set the working directory. As this applies to most operating system shells, most support a change directory command, including Unix and...

on-screen. cat was part of the early versions of Unix, e.g., Version 1. It replaced pr, a PDP-7 and Multics command for copying a single file to the screen. It...

(SUS). These commands are implemented in many shells on modern Unix, Unix-like and other operating systems. This list does not cover commands for all versions...

shell command for listing files – including special files such as directories. Originally developed for Unix and later codified by POSIX and Single UNIX Specification...

Unix (/ˈjuːnɪks/ , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T...

A Unix shell is a shell that provides a command-line user interface for a Unix-like operating system. A Unix shell provides a command language that can...

touch is a shell command that sets the modification timestamp of an existing file to be current – which on a Unix-based file system includes special files...

for Unix, today it is also available on Unix-like and non Unix-like systems, KolibriOS, IBM i, EFI shell. and Windows (via UnxUtils). The del command provides...

wc (short for word count) is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of...

shell command for scheduling commands to be executed at a future time; once. The command was developed for Unix and is available on Unix and Unix-like...

tr is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. It is an abbreviation of translate or transliterate, indicating its operation...

passed as an argument to command the inner command is invoked instead of the function. The command is available on Unix and Unix-like operating systems...

computing, kill is a command that is used in several popular operating systems to send signals to running processes. In Unix and Unix-like operating systems...

dd is a shell command for reading, writing and converting file data. Originally developed for Unix, it has been implemented on many other environments...

any version of the Single UNIX Specification. A Unix-like application is one that behaves like the corresponding Unix command or shell. Although there...

productivity by abbreviating a command or for including commonly used arguments with a command. The command is available in Unix shells, AmigaDOS, 4DOS/4NT...

instead of creating a new file with default permissions. The command was part of Version 1 Unix, and is specified by POSIX. The implementation from GNU has...

considered a non-portable command and the printf command (introduced in Ninth Edition Unix) is preferred instead. The command is available the following...

head is a program on Unix and Unix-like operating systems used to display the beginning of a text file or piped data. The command syntax is: head [options]...

In computing, Bash is an interactive command interpreter and programming language developed for Unix-like operating systems. It is designed as a 100%...

The standard Unix command who displays a list of users who are currently logged into the computer. The who command is related to the command w, which provides...

will fail to resolve if the file is moved. Per the Single Unix Specification, the ln command is specified in the Shell and Utilities (XCU) document. POSIX...

(short for manual page) is a form of software documentation found on Unix and Unix-like operating systems. Topics covered include programs, system libraries...

In computing, tty is a command in Unix and Unix-like operating systems to print the file name of the terminal connected to standard input. tty stands for...

yes is a command on Unix and Unix-like operating systems, which outputs an affirmative response, or a user-defined string of text continuously until killed...

Single UNIX Specification (SUS) is a standard for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark...

In most Unix and Unix-like operating systems, the ps (process status) program displays the currently-running processes. The related Unix utility top provides...

nm is a Unix command used to dump the symbol table and their attributes from a binary executable file (including libraries, compiled object modules, shared-object...

dig is a network administration command-line tool for querying the Domain Name System (DNS). dig is useful for network troubleshooting and for educational...

The Unix command su, which stands for "substitute user" (or historically "superuser"), is used by a computer user to execute commands with the privileges...