IPCRM(1) BSD General Commands Manual IPCRM(1)NAME
ipcrm -- remove the specified message queues, semaphore sets, and shared segments
SYNOPSIS
ipcrm [-W] [-v] [-q msqid] [-m shmid] [-s semid] [-Q msgkey] [-M shmkey] [-S semkey] ...
DESCRIPTION
The ipcrm utility removes the specified message queues, semaphores and shared memory segments. These System V IPC objects can be specified
by their creation ID or any associated key.
The following options are generic:
-v If specified once with -W or with -1 for an object, it will show all removed objects. If specified twice with -W or with -1 for an
objects, it will show all removed objects and all failed removals.
-W Try to wipe all specified message queues, semaphores and shared memory segments.
-y Use the kvm(3) interface instead of the sysctl(3) interface to extract the required information. If ipcrm is to operate on the run-
ning system, using kvm(3) will require read privileges to /dev/kmem.
The following options are used to specify which IPC objects will be removed. Any number and combination of these options can be used:
-q msqid
Remove the message queue associated with the ID msqid from the system.
-m shmid
Mark the shared memory segment associated with ID shmid for removal. This marked segment will be destroyed after the last detach.
-s semid
Remove the semaphore set associated with ID semid from the system.
-Q msgkey
Remove the message queue associated with key msgkey from the system.
-M shmkey
Mark the shared memory segment associated with key shmkey for removal. This marked segment will be destroyed after the last detach.
-S semkey
Remove the semaphore set associated with key semkey from the system.
The identifiers and keys associated with these System V IPC objects can be determined by using ipcs(1). If the identifier or the key is -1,
it will remove all these objects.
SEE ALSO ipcs(1)HISTORY
The wiping of all System V IPC objects was first implemented in FreeBSD 6.4 and 7.1.
AUTHORS
The original author was Adam Glass. The wiping of all System V IPC objects was thought up by Callum Gibson and extended and implemented by
Edwin Groothuis.
BSD December 12, 2007 BSD
Check Out this Related Man Page
ipcrm(1) User Commands ipcrm(1)NAME
ipcrm - remove a message queue, semaphore set, or shared memory ID
SYNOPSIS
ipcrm [-z zone] [-m shmid] [-q msqid] [-s semid]
[-M shmkey] [-Q msgkey] [-S semkey]
DESCRIPTION
ipcrm removes one or more messages, semaphores, or shared memory identifiers.
OPTIONS
The following option is supported:
-z zone Keys specified by other options refer to facilities in the specified zone (see zones(5)). The default is the zone in which the
command is executing. This option is only useful when the command is executed in the global zone.
The identifiers are specified by the following options:
-m shmid Removes the shared memory identifier shmid from the system. The shared memory segment and data structure associated with it
are destroyed after the last detach.
-q msqid Removes the message queue identifier msqid from the system and destroys the message queue and data structure associated with
it.
-s semid Removes the semaphore identifier semid from the system and destroys the set of semaphores and data structure associated with
it.
-M shmkey Removes the shared memory identifier, created with key shmkey, from the system. The shared memory segment and data structure
associated with it are destroyed after the last detach.
-Q msgkey Removes the message queue identifier, created with key msgkey, from the system and destroys the message queue and data struc-
ture associated with it.
-S semkey Removes the semaphore identifier, created with key semkey, from the system and destroys the set of semaphores and data struc-
ture associated with it.
The details of the removes are described in msgctl(2), shmctl(2), and semctl(2). Use the ipcs command to find the identifiers and keys.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of ipcrm: LANG, LC_ALL, LC_CTYPE,
LC_MESSAGES, and NLSPATH.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWipc |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO ipcs(1), msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), shmctl(2), shmget(2), shmop(2), attributes(5), envi-
ron(5), standards(5), zones(5)SunOS 5.11 9 Jan 2004 ipcrm(1)