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PROLOG | NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | STDIN | INPUT FILES | ENVIRONMENT VARIABLES | ASYNCHRONOUS EVENTS | STDOUT | STDERR | OUTPUT FILES | EXTENDED DESCRIPTION | EXIT STATUS | CONSEQUENCES OF ERRORS | APPLICATION USAGE | EXAMPLES | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
EXIT(1P) POSIX Programmer's Manual EXIT(1P)
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
exit — cause the shell to exit
exit [n]
The exit utility shall cause the shell to exit with the exit status
specified by the unsigned decimal integer n. If n is specified, but
its value is not between 0 and 255 inclusively, the exit status is
undefined.
A trap on EXIT shall be executed before the shell terminates, except
when the exit utility is invoked in that trap itself, in which case
the shell shall exit immediately.
None.
See the DESCRIPTION.
Not used.
None.
None.
Default.
Not used.
The standard error shall be used only for diagnostic messages.
None.
None.
The exit status shall be n, if specified. Otherwise, the value shall
be the exit value of the last command executed, or zero if no command
was executed. When exit is executed in a trap action, the last
command is considered to be the command that executed immediately
preceding the trap action.
Default.
The following sections are informative.
None.
Exit with a true value:
exit 0
Exit with a false value:
exit 1
As explained in other sections, certain exit status values have been
reserved for special uses and should be used by applications only for
those purposes:
126 A file to be executed was found, but it was not an executable
utility.
127 A utility to be executed was not found.
>128 A command was interrupted by a signal.
None.
Section 2.14, Special Built-In Utilities
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) In the event of any discrepancy between this version and
the original IEEE and The Open Group Standard, the original IEEE and
The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 EXIT(1P)
Pages that refer to this page: return(1p) , sh(1p)