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EXIT(1P)                   POSIX Programmer's Manual                  EXIT(1P)
PROLOG
       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
       exit -- cause the shell to exit
SYNOPSIS
       exit [n]
DESCRIPTION
       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
       None.
OPERANDS
       See the DESCRIPTION.
STDIN
       Not used.
INPUT FILES
       None.
ENVIRONMENT VARIABLES
       None.
ASYNCHRONOUS EVENTS
       Default.
STDOUT
       Not used.
STDERR
       The standard error shall be used only for diagnostic messages.
OUTPUT FILES
       None.
EXTENDED DESCRIPTION
       None.
EXIT STATUS
       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
       Default.
       The following sections are informative.
APPLICATION USAGE
       None.
EXAMPLES
       Exit with a true value:
           exit 0
       Exit with a false value:
           exit 1
RATIONALE
       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
       None.
SEE ALSO
       Section 2.14, Special Built-In Utilities
COPYRIGHT
       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 Electri-
       cal 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.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                             EXIT(1P)