Categories: Unix stubs | Uncategorized from August 2007 | Uncategorized pages Filiation of Unix and Unix-like systems Unix (officially trademarked as UNIX®) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. ... A command line interface or CLI is a method of interacting with a computer by giving it lines of textual commands (that is, a sequence of characters) either from keyboard input or from a script. ... This is a list of UNIX utilities as specified by IEEE Std 1003. ... The title given to this article is incorrect due to technical limitations. ... chattr is a UNIX program that allows a user to set certain attributes to a file. ... This article does not cite any references or sources. ... The chmod command (abbreviated from change mode) is a shell command in Unix and Unix-like environments. ... chown is a Unix command used to change the recorded owner of a computer file. ... The chgrp command is used by unprivileged users on Unix-like systems to change the group associated with a file. ... Cksum is a POSIX command that reads the files specified by the File parameter and calculates a checksum, cyclic redundancy check (CRC) and the byte count for a file or files. ... cmp is a command line utility for computer systems that use a Unix operating system. ... cp is the command entered in a Unix shell to copy a file from one place to another, possibly on a different filesystem. ... du (abbreviated from disk usage) is a standard Unix program used to estimate the file space usage; space used under a particular directory or files on a file system. ... df (abbreviated from disk free) is a standard Unix computer program used to display the amount of available disk space for filesystems on which the invoking user has appropriate read access, df is usually implemented by reading the mtab file or using statfs. ... file is a program originated in Unix that runs under the shell (command-line) to determine the file type heuristically instead of other simpler ways to classify it, like with file extensions, MIMEs, etc. ... The system utility fsck (for file system check or file system consistency check) is a tool for checking the consistency of a file system in the Unix system and clones thereof. ... The ln command is used on Unix-like systems to create links between files. ... For other uses, see LS. ls is a command specified by POSIX and the Single UNIX Specification, and is thus implemented in Unix and Unix-like operating systems. ... lsof is a command found in almost any Unix system that reports open files by processes of a Operating System. ... The mkdir command in the Unix operating system is used to make a new directory. ... ... The correct title of this article is . ... The title given to this article is incorrect due to technical limitations. ... The title given to this article is incorrect due to technical limitations. ... This article does not cite any references or sources. ... split is a Unix utility most commonly used to split a file into one or more other files. ... touch is a standard Unix program used to change a files access and modification timestamps. ... The at command is used to schedule commands to be executed once at a particular time in the future. ... A chroot on Unix operating systems is an operation which changes the root directory. ... The crontab command, found in Unix and Unix-like operating systems, is used to schedule commands to be executed periodically. ... Exit is a command used in many operating systems command line shells. ... Wikibooks has more about this subject: kill In Unix and Unix-like operating systems, kill is a command used to send simple messages to processes running on the system. ... killall is a command line utility initially written for use with the GNU/Linux operating systems. ... nice (IPA pronunciation: ) is a command found on UNIX and other POSIX-like operating systems such as Linux. ... pgrep is a command line utility initially written for use with the Solaris 7 operating systems and then ported to GNU/Linux. ... pidof is a Linux utility that returns the process ID (PID) of a running process. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... sleep is an instruction for a computer that delays execution for a specified period of time. ... This article is about a Unix command. ... In many Unix-like operating systems, the top command produces a constantly-updated list of all resident processes, listed in order of CPU usage. ... The correct title of this article is . ... In Unix, watch runs the specified command repeatedly and displays the output on stdout so you can watch it change over time. ... env is a shell utility for Unix-like operating systems (including Linux). ... In computer networking, the Name/Finger protocol and the Finger user information protocol are simple network protocols for the exchange of human-oriented status and user information. ... In computer software, id is a program in Unix operating systems that prints the uid of the account of which the program is executed by. ... Usage: logname [OPTION] Print the name of the current user. ... mesg is a Unix command that sets or reports the permission other users have to write to your terminal using the talk and write commands. ... passwd is a tool on most Unix and Linux systems used to change a users password. ... The Unix su (substitute user) command is used to assume the login shell of another user without logging out. ... On Unix-like operating systems, the sudo command is used to run commands with the root users privileges. ... In computer software, uname is a program in Unix operating systems that prints the name, version and other details about the running operating system. ... Uptime is a measure of the time a computer system has been up and running. ... The command w on many Unix-like operating systems provides a quick summary of every user logged into a computer, what that user is currently doing, and what load all the activity is imposing on the computer itself. ... wall is a Unix command line utility. ... who is a Unix-command which creates almost the same output as the Unix-command w; it shows you users currently logged in a system. ... whoami is a Unix-command which outputs the username of the user which runs the command. ... write can refer to several Unix commands. ... AWK is a general purpose computer language that is designed for processing text-based data, either in files or data streams. ... The comm command in Unix is a utility that is used to compare two files. ... cut is a Unix command which is typically used to extract a certain range of characters from a line, usually from a file. ... ed was the original standard text editor on the Unix operating system. ... ex, short for EXtended, is a line editor for Unix systems. ... Usage: fmt [-DIGITS] [OPTION]... [FILE]... Reformat each paragraph in the FILE(s), writing to standard output. ... head is a program that shows the first 10 lines by default of a file or piped data, on Unix and Unix-like systems. ... iconv is a computer program and a standardized API used to convert between different character encodings. ... join is a command in Unix-like operating systems. ... less is a program on Unix and Unix-like systems used to view (but not change) the contents of a text file one screen at a time. ... Example output of the more command. ... Paste is a Unix utility tool which is used to join files horizontally (parallel merging), e. ... The correct title of this article is . ... sort is a standard Unix command line program that prints the lines of its input in sorted order. ... Usage: tac [OPTION]... [FILE]... Write each FILE to standard output, last line first. ... tail is a program on Unix and Unix-like systems used to display the last few lines of a text file or piped data. ... tr (abbreviated from translate or transliterate) is a command in Unix-like operating systems. ... uniq is a Unix utility which, when fed a text file, outputs the file with adjacent identical lines collapsed to one. ... wc (short for word count) is a command in Unix-like operating systems. ... xargs is a command of the Unix and most Unix-like operating system which eases passing command output to another command as command line arguments. ... In computing, a shell is a piece of software that provides an interface for users (command line interpreter). ... basename is a common program found on Unix systems; typically it is the GNU Projects coreutils version, which is Free software. ... echo is a command in Unix (and by extension, its descendants, such as Linux) and MS-DOS that places a string on the terminal. ... expr is a command line Unix utility which evaluates an expression and outputs the corresponding value. ... In Unix-like operating systems, false is the command that always returns the value 1, which is regarded by the shell as the logical value false. ... Several programming languages implement a printf function, to output a formatted string. ... test is a Unix command that evaluates conditional expressions. ... In Unix-like operating systems, true is a command whose only function is to always return the value 0, which is regarded by the shell as the logical value true. ... unset is a Unix shell command. ... The Common Unix Printing System (CUPS) is a modularised computer printing system for Unix-like operating systems that allows computers to act as powerful print servers. ... inetd is a daemon on many Unix systems that manages Internet services. ... This article or section includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... For other uses, see Ping (disambiguation). ... In computing, rlogin is a Unix software utility that allows users to log in on another host via a network, communicating via TCP port 513. ... traceroute outputs the list of traversed routers in simple text format, together with timing information traceroute is a computer network tool used to determine the route taken by packets across an IP network. ... The correct title of this article is . ... grep is a command line utility that was originally written for use with the Unix operating system. ... In computer software, strings is a program in Unix-like operating systems that prints the strings found in an executable. ... The banner program displays a large ASCII art version of input text. ... bc is an arbitrary precision calculator language with syntax similar to the C programming language. ... cal is a standard program on Unix that prints an ASCII calendar of the given month or year. ... This article or section includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... The man page on man Almost all substantial UNIX and Unix-like operating systems have extensive documentation known as man pages (short for manual pages). The Unix command used to display them is man. ... size is a command line utility originally written for use with the Unix-like operating systems. ... yes is a Unix command. ...