ipcrm(1) BSD General Commands Manual ipcrm(1)NAME
ipcrm -- remove the specified message queues, semaphore sets, and shared memory segments
SYNOPSIS
ipcrm [-M shmkey] [-m shmid] [-Q msgkey] [-q msqid] [-S semkey] [-s semid] ...
DESCRIPTION
Ipcrm removes the specified message queues, semaphores and shared memory segments. These System V IPC objects can be specified by their cre-
ation id or any associated key.
The following options are used to specify which IPC objects will be removed. Any number and combination of these options can be used:
-M shmkey
Mark the shared memory segment associated with key shmkey for removal. This marked segment will be destroyed after the last detach.
-m shmid
Mark the shared memory segment associated with id shmid for removal. This marked segment will be destroyed after the last detach.
-Q msgkey
Remove the message queue associated with key msgkey from the system.
-q msqid
Remove the message queue associated with the id msqid from the system.
-S semkey
Remove the semaphore set associated with key semkey from the system.
-s semid
Removes the semaphore set associated with id semid from the system.
The identifiers and keys associated with these System V IPC objects can be determined by using ipcs(1)SEE ALSO ipcs(1)BSD August 8, 1994 BSD
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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 struc-
ture 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
structure associated with it.
-S semkey Removes the semaphore identifier, created with key semkey, from the system and destroys the set of semaphores and data
structure 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 5.10 9 Jan 2004 ipcrm(1)