Plan 9 commands

AWK () is a scripting language designed for text processing and typically used as a data extraction and reporting tool. Like sed and grep, it is a filter, and it is a standard feature of most Unix-like operating systems. The shell command that runs the AWK processor is named .

sed (short for stream editor) is a utility that transforms text via a script written in a relatively simple and compact programming language. It was developed from 1973 to 1974 by Lee E. McMahon of Bell Labs, and is available today for most operating systems. The functionality of sed is based on the scripting features of the interactive editor ed ("editor", 1971) and the earlier qed ("quick editor", 1965–66). It was one of the earliest tools to support regular expressions, and remains in use for text processing, most notably with the substitution command. Popular alternative tools for text man

grep is a command-line utility for searching text for lines that match a regular expression. Its name comes from the ed command g/re/p (global, regular expression, print), which has the same effect. grep was originally developed for the Unix operating system, and is commonly available on Unix-like and some other systems such as OS-9. The shell command that runs the utility has the same name: .

' is a shell command for changing access permissions and special mode flags of files (including special files such as directories). The name is short for change mod'e where mode refers to the permissions and flags collectively.

basic UNIX command used to remove objects such as files and directories

ls is a shell command for listing files including special files such as directories. Originally developed for Unix and later codified by POSIX and Single UNIX Specification, it is supported in many operating systems today, including Unix-like variants, Windows (via PowerShell and UnxUtils), EFI, and MSX-DOS (via MSX-DOS2 Tools).

gzip is a file format and a file compression program. The program uses the Deflate algorithm to compress and decompress a single file using the gzip file format.

UNIX command for copying files and directories

diff is a shell command that compares the content of files and reports differences. The term diff is also used to identify the output of the command and is used as a verb for running the command. To diff files, one runs diff to create a diff.

The mkdir (make directory) command in the Unix, DOS, DR FlexOS, IBM OS/2, Microsoft Windows, and ReactOS operating systems is used to make a new directory. It is also available in the EFI shell and in the PHP scripting language. In DOS, OS/2, Windows and ReactOS, the command is often abbreviated to md.

Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson. It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). Yacc is supplied as a standard utility on BSD and AT&T Unix. GNU-based Linux distributions include Bison, a forward-compatible Yacc replacement.

command on Unix and Unix-like operating systems

standard UNIX utility

pwd (print working directory) is a shell command that reports the working directory path to standard output.

computer file format that can combine multiple files into a single file called "tarball"

command-line utility

', short for change group', is a shell command for changing the group associated with a Unix-based file system file including special files such as directories. Changing the group of a file is restricted to a super-user (such as via ) or to the file's owning user if the user is in the specified group.

command of DOS, OS/2, Microsoft Windows, Unix and Unix-like operating systems

standard UNIX utility

In computing, netstat is a command-line network utility that displays open network sockets, routing tables, and a number of network interface (network interface controller or software-defined network interface) and network protocol statistics. It is available on Unix, Plan 9, Inferno, and Unix-like operating systems including macOS, Linux, Solaris and BSD. It is also available on IBM OS/2 and on Microsoft Windows NT-based operating systems including Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10.

line-oriented text editor

command in several OSes to terminate a process

UNIX utility which implements an arbitrary-precision arithmetic language

UNIX utility to count newlines, words, and bytes

shell command in various operating systems

standard Unix program used to change a file's access and modification timestamps

UNIX Utility

command in Unix-like operating systems

shell command in various operating systems

standard Unix program

standard Unix program used to estimate file space usage

passwd is a command on Unix, Plan 9, Inferno, and most Unix-like operating systems used to change a user's password. The password entered by the user is run through a key derivation function to create a hashed version of the new password, which is saved. Only the hashed version is stored; the entered password is not saved for security reasons.

command line utility for Unix or a Unix-like operating systems

basename is a shell command for extracting the last name of a file path.

standard UNIX utility

standard UNIX utility

standard UNIX utility

original version of `patch' written by Larry Wall

standard UNIX utility

uniq is a utility command on Unix, Plan 9, Inferno, and Unix-like operating systems which, when fed a text file or standard input, outputs the text with adjacent identical lines collapsed to one, unique line of text.

Unix command

Unix archiver utility

xargs (short for "extended arguments") is a command on Unix and most Unix-like operating systems used to build and execute commands from standard input. It converts input from standard input into arguments to a command.

command in Unix-like operating systems

Unix or Linux command dumping a symbol table

cross-platform reverse-Polish calculator program

Unix command to print a random message

troff (), short for "typesetter roff", is the major component of a document processing system developed by Bell Labs for the Unix operating system. troff and the related nroff were both developed from the original roff.

comm is a shell command for comparing two files for common and distinct lines. It reads the files as lines of text and outputs text as three columns. The first two columns contain lines unique to the first and second file, respectively. The last column contains lines common to both. Columns are typically separated with the tab character. If the input text contains lines beginning with the separator character, the output columns can become ambiguous.

command-line utility

Unix command

standard UNIX utility

REDIRECT Apropos_(Unix)#Related utilities

Unix pagination and columnation tool