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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, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps
     
    

    SYNOPSIS

     

    sh

    exit [n]
    

    return [n]
    

     

    csh

    exit [( expr )]
    

    goto label
    

     

    ksh

    *exit [n]
    

    *return [n]
    

     

    ksh93

    +exit [n]
    

    +return [n]
    

     

    DESCRIPTION

     

    sh

    exit causes the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF also causes the shell to exit.)

    return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command executed.  

    csh

    exit causes the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr.

    The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end.  

    ksh

    exit causes the calling shell or shell script to exit with the exit status specified by n. The value is the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file also causes the shell to exit except for a shell which has the ignoreeof option (See set below) turned on.

    return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value is the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit.

    On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:

    1.
    Variable assignment lists preceding the command remain in effect when the command completes.
    2.
    I/O redirections are processed after variable assignments.
    3.
    Errors cause a script that contains them to abort.
    4.
    Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a variable assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed.
     

    ksh93

    exit is shell special built-in that causes the shell that invokes it to exit. Before exiting the shell, if the EXIT trap is set, it is invoked.

    If n is specified, it is used to set the exit status.

    return is a shell special built-in that causes the function or dot script that invokes it to exit. If return is invoked outside of a function or dot script it is equivalent to exit.

    If return is invoked inside a function defined with the function reserved word syntax, then any EXIT trap set within the function is invoked in the context of the caller before the function returns.

    If n is specified, it is used to set the exit status.

    On this manual page, ksh93 commands that are preceded by one or two + symbols are special built-in commands and are treated specially in the following ways:

    1.
    Variable assignment lists preceding the command remain in effect when the command completes.
    2.
    I/O redirections are processed after variable assignments.
    3.
    Errors cause a script that contains them to abort.
    4.
    They are not valid function names.
    5.
    Words following a command preceded by ++ that are in the format of a variable assignment are expanded with the same rules as a variable assignment. This means that tilde substitution is performed after the = sign and field splitting and file name generation are not performed.
     

    EXIT STATUS

     

    ksh93

    If n is specified for exit, the exit status is the least significant eight bits of the value of n. Otherwise, the exit status is the exit status of preceding command. When invoked inside a trap, the preceding command means the command that invoked the trap.

    If n is specified for return, the exit status is the least significant eight bits of the value of n. Otherwise, the exit status is the exit status of preceding command.  

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    AvailabilitySUNWcsu

     

    SEE ALSO

    break(1), csh(1), ksh(1), ksh93(1), sh(1), attributes(5)


     

    Index

    NAME
    SYNOPSIS
    sh
    csh
    ksh
    ksh93
    DESCRIPTION
    sh
    csh
    ksh
    ksh93
    EXIT STATUS
    ksh93
    ATTRIBUTES
    SEE ALSO


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