In
computing
Computing is any goal-oriented activity requiring, benefiting from, or creating computer, computing machinery. It includes the study and experimentation of algorithmic processes, and the development of both computer hardware, hardware and softw ...
,
exit is a
command
Command may refer to:
Computing
* Command (computing), a statement in a computer language
* command (Unix), a Unix command
* COMMAND.COM, the default operating system shell and command-line interpreter for DOS
* Command key, a modifier key on A ...
used in many
operating system
An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs.
Time-sharing operating systems scheduler (computing), schedule tasks for ...
command-line
A command-line interface (CLI) is a means of interacting with software via commands each formatted as a line of text. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user-friendly alternativ ...
shells and
scripting language
In computing, a script is a relatively short and simple set of instructions that typically automation, automate an otherwise manual process. The act of writing a script is called scripting. A scripting language or script language is a programming ...
s.
The command causes the shell or program to
terminate. If performed within an interactive command shell, the user is logged out of their current
session, and/or user's current
console
Console may refer to:
Computing and video games
* System console, a physical device to operate a computer
** Virtual console, a user interface for multiple computer consoles on one device
** Command-line interface, a method of interacting with ...
or
terminal connection is disconnected. Typically an optional
exit code can be specified, which is typically a simple integer value that is then returned to the
parent process
In computing, a parent process is a process that has created one or more child processes.
Unix-like systems
In Unix-like operating systems, every process except (the swapper) is created when another process executes the fork() system call. T ...
.
Implementations
Operating systems, shells, and scripting languages providing this command include
Microsoft
Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...
MSX-DOS
MSX-DOS is a discontinued disk operating system developed by Microsoft's Japan subsidiary for the 8-bit home computer standard MSX, and is a cross between MS-DOS v1.25 and CP/M-80 v2.2.
MSX-DOS
MSX-DOS and the extended BASIC with 3½-in ...
version 2,
IBM
International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...
OS/2
OS/2 is a Proprietary software, proprietary computer operating system for x86 and PowerPC based personal computers. It was created and initially developed jointly by IBM and Microsoft, under the leadership of IBM software designer Ed Iacobucci, ...
,
DR FlexOS
FlexOS is a discontinued modular real-time multiuser multitasking operating system ( RTOS) designed for computer-integrated manufacturing, laboratory, retail and financial markets. Developed by Digital Research's Flexible Automation Business ...
,
HP MPE/iX,
KolibriOS
KolibriOS is an open-source operating system for x86 computers, written completely in FASM assembly language. It has been developed since 2004, forked from MenuetOS, and supports i586 CPU, CPUs or newer. KolibriOS is small sized and fits on a sin ...
,
SymbOS
SYmbiosis Multitasking Based Operating System (SymbOS) is a Computer multitasking, multitasking operating system for Zilog Z80-based 8-bit computer systems.
Unlike early 8-bit operating systems, SymbOS is based on a microkernel, which provides ...
,
cmd.exe
cmd.exe, a.k.a. Command Prompt, is a shell program on later versions of Windows ( NT and CE families), OS/2,, eComStation, ArcaOS, and ReactOS. In some versions of Windows ( CE .NET 4.2, CE 5.0 and Embedded CE 6.0) it is referred to as ...
,
sh,
ksh,
Perl
Perl is a high-level, general-purpose, interpreted, dynamic programming language. Though Perl is not officially an acronym, there are various backronyms in use, including "Practical Extraction and Reporting Language".
Perl was developed ...
,
AWK,
PHP
PHP is a general-purpose scripting language geared towards web development. It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. The PHP reference implementation is now produced by the PHP Group. ...
,
TCL
TCL or Tcl or TCLs may refer to:
Business
* TCL Technology, a Chinese consumer electronics and appliance company
** TCL Electronics, a subsidiary of TCL Technology
* Texas Collegiate League, a collegiate baseball league
* Trade Centre Limited ...
,
PowerShell
PowerShell is a shell program developed by Microsoft for task automation and configuration management. As is typical for a shell, it provides a command-line interpreter for interactive use and a script interpreter for automation via a langu ...
, and others.
On
MS-DOS
MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few op ...
, the command is available in versions 2 and later.
[DR DOS 6.0 User Guide Optimisation and Configuration Tips](_blank)
/ref> and Datalight
Datalight was a privately held software company specializing in power failsafe and high performance software for preserving data integrity in embedded systems. The company was founded in 1983 by Roy Sherrill, and its headquarters is in Bothell, W ...
ROM-DOS
Datalight was a privately held software company specializing in power failsafe and high performance software for preserving data integrity in embedded systems. The company was founded in 1983 by Roy Sherrill, and its headquarters is in Bothell, ...
also include an implementation of the command. It is also available in the open source
Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentrali ...
MS-DOS emulator
In computing, an emulator is Computer hardware, hardware or software that enables one computer system (called the ''host'') to behave like another computer system (called the ''guest''). An emulator typically enables the host system to run sof ...
DOSBox
DOSBox is a free and open-source MS-DOS emulator. It supports running programs primarily video games that are otherwise inaccessible since hardware for running a compatible disk operating system (DOS) is obsolete and generally unavailab ...
.
The numerical computing
Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). It is the study of numerical methods th ...
environment MATLAB
MATLAB (an abbreviation of "MATrix LABoratory") is a proprietary multi-paradigm programming language and numeric computing environment developed by MathWorks. MATLAB allows matrix manipulations, plotting of functions and data, implementat ...
includes an exit function with similar functionality.
See also
*exit (system call)
On many computer operating systems, a computer process terminates its execution by making an exit system call. More generally, an exit in a multithreading environment means that a thread of execution has stopped running. For resource man ...
*Exit status
In computing, the exit status (also exit code or exit value) of a terminated process is an integer number that is made available to its parent process (or caller). In DOS, this may be referred to as an errorlevel.
When computer programs ar ...
*List of Unix commands
This is a list of the shell commands of the most recent version of the Portable Operating System Interface (POSIX) IEEE Std 1003.1-2024 which is part of the Single UNIX Specification (SUS). These commands are implemented in many shells on moder ...
*List of DOS commands
This article lists notable commands provided by the MS-DOS disk operating system (DOS), especially as used on an IBM PC compatible computer. Other DOS variants as well as the legacy Windows shell, Command Prompt (cmd.exe), provide many of these c ...
References
Further reading
*
*
*
*
External links
exit
cause the shell to exit – Commands & Utilities Reference, The Single UNIX® Specification, Issue 7 from The Open Group
The Open Group is a global consortium that seeks to "enable the achievement of business objectives" by developing " open, vendor-neutral technology standards and certifications." It has 900+ member organizations and provides a number of services ...
exit , Microsoft Docs
IBM i Qshell commands
Internal DOS commands
MSX-DOS commands
OS/2 commands
ReactOS commands
Unix process- and task-management-related software
Unix SUS2008 utilities
Windows administration
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