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Интерактивная система просмотра системных руководств (man-ов)

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exit (1)
  • exit (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • exit (1) ( FreeBSD man: Команды и прикладные программы пользовательского уровня )
  • exit (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  • >> exit (1) ( POSIX man: Команды и прикладные программы пользовательского уровня )
  • exit (2) ( Solaris man: Системные вызовы )
  • exit (2) ( Русские man: Системные вызовы )
  • exit (2) ( Linux man: Системные вызовы )
  • exit (3) ( Solaris man: Библиотечные вызовы )
  • exit (3) ( FreeBSD man: Библиотечные вызовы )
  • exit (3) ( Русские man: Библиотечные вызовы )
  • exit (3) ( Linux man: Библиотечные вызовы )
  • exit (3) ( POSIX man: Библиотечные вызовы )
  •  

    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

    Special Built-In Utilities  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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.opengroup.org/unix/online.html .


     

    Index

    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


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