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IPCRM(1P)		   POSIX Programmer's Manual		     IPCRM(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
       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 facili‐
       ties to be removed are specified by the options.

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

OPTIONS
       The   ipcrm   facility	supports   the	 Base  Definitions  volume  of
       IEEE Std 1003.1-2001, 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
	      IEEE Std 1003.1-2001, Section  8.2,  Internationalization	 Vari‐
	      ables  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  System Interfaces volume of IEEE Std 1003.1-2001, msgctl(),
       semctl(), shmctl()

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 .

IEEE/The Open Group		     2003			     IPCRM(1P)
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