linux man page for ipcrm

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

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 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 asso-
	      ciated with it.

       -M  shmkey
	      Remove  the shared memory identifier, created with key shmkey, from the system. The shared memory segment and data structure associ-
	      ated 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 asso-
	      ciated 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 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 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 Technol-
       ogy -- 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(P)