xenial (1) ipcrm.1posix.gz

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


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


DESCRIPTION
       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
       The  ipcrm  utility  shall  conform to the Base Definitions volume of POSIX.1‐2008, 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
       None.


STDIN
       Not used.


INPUT FILES
       None.


ENVIRONMENT VARIABLES
       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.1‐2008, 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
       Default.


STDOUT
       Not used.


STDERR
       The standard error shall be used only for diagnostic messages.


OUTPUT FILES
       None.


EXTENDED DESCRIPTION
       None.


EXIT STATUS
       The following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.


CONSEQUENCES OF ERRORS
       Default.

       The following sections are informative.


APPLICATION USAGE
       None.


EXAMPLES
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       ipcs

       The Base Definitions volume of POSIX.1‐2008, Chapter 8,  Environment  Variables,  Section  12.2,  Utility
       Syntax Guidelines

       The System Interfaces volume of POSIX.1‐2008, msgctl(), semctl(), shmctl()


       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 .