ipcrm(1p) — Linux manual page

IPCRM(1P)               POSIX Programmer's Manual               IPCRM(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

       ipcrm — remove an XSI message queue, semaphore set, or shared
       memory segment identifier

SYNOPSIS         top

       ipcrm [-q msgid|-Q msgkey|-s semid|-S semkey|-m shmid|-M shmkey]...

DESCRIPTION         top

       The ipcrm utility shall remove zero or more message queues,
       semaphore sets, or shared memory segments. The interprocess
       communication facilities to be removed are specified by the
       options.

       Only a user with appropriate privileges shall be allowed to remove
       an interprocess communication facility that was not created by or
       owned by the user invoking ipcrm.

OPTIONS         top

       The ipcrm utility shall conform to the Base Definitions volume of
       POSIX.1‐2017, Section 12.2, Utility Syntax Guidelines.

       The following options shall be supported:

       -q msgid  Remove the message queue identifier msgid from the
                 system and destroy the message queue and data structure
                 associated with it.

       -m shmid  Remove the shared memory identifier shmid from the
                 system. The shared memory segment and data structure
                 associated with it shall be destroyed after the last
                 detach.

       -s semid  Remove the semaphore identifier semid from the system
                 and destroy the set of semaphores and data structure
                 associated with it.

       -Q msgkey Remove the message queue identifier, created with key
                 msgkey, from the system and destroy the message queue
                 and data structure associated with it.

       -M shmkey Remove the shared memory identifier, created with key
                 shmkey, from the system. The shared memory segment and
                 data structure associated with it shall be destroyed
                 after the last detach.

       -S semkey Remove the semaphore identifier, created with key
                 semkey, from the system and destroy the set of
                 semaphores and data structure associated with it.

OPERANDS         top

       None.

STDIN         top

       Not used.

INPUT FILES         top

       None.

ENVIRONMENT VARIABLES         top

       The following environment variables shall affect the execution of
       ipcrm:

       LANG      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base
                 Definitions volume of POSIX.1‐2017, Section 8.2,
                 Internationalization Variables for the precedence of
                 internationalization variables used to determine the
                 values of locale categories.)

       LC_ALL    If set to a non-empty string value, override the values
                 of all the other internationalization variables.

       LC_CTYPE  Determine the locale for the interpretation of sequences
                 of bytes of text data as characters (for example,
                 single-byte as opposed to multi-byte characters in
                 arguments).

       LC_MESSAGES
                 Determine the locale that should be used to affect the
                 format and contents of diagnostic messages written to
                 standard error.

       NLSPATH   Determine the location of message catalogs for the
                 processing of LC_MESSAGES.

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 following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.

CONSEQUENCES OF ERRORS         top

       Default.

       The following sections are informative.

APPLICATION USAGE         top

       None.

EXAMPLES         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       ipcs(1p)

       The Base Definitions volume of POSIX.1‐2017, Chapter 8,
       Environment Variables, Section 12.2, Utility Syntax Guidelines

       The System Interfaces volume of POSIX.1‐2017, msgctl(3p),
       semctl(3p), shmctl(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 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 .

       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                2017                         IPCRM(1P)

Pages that refer to this page: ipcs(1p)

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