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)

PROLOG         top

       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.

NAME         top

       exit — cause the shell to exit

SYNOPSIS         top

       exit [n]

DESCRIPTION         top

       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.

OPTIONS         top

       None.

OPERANDS         top

       See the DESCRIPTION.

STDIN         top

       Not used.

INPUT FILES         top

       None.

ENVIRONMENT VARIABLES         top

       None.

ASYNCHRONOUS EVENTS         top

       Default.

STDOUT         top

       Not used.

STDERR         top

       The standard error shall be used only for diagnostic messages.

OUTPUT FILES         top

       None.

EXTENDED DESCRIPTION         top

       None.

EXIT STATUS         top

       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.

CONSEQUENCES OF ERRORS         top

       Default.

       The following sections are informative.

APPLICATION USAGE         top

       None.

EXAMPLES         top

       Exit with a true value:

           exit 0

       Exit with a false value:

           exit 1

RATIONALE         top

       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.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       Section 2.14, Special Built-In Utilities

COPYRIGHT         top

       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)