IPCRM(C) XENIX System V IPCRM(C)
Name
ipcrm - Removes a message queue, semaphore set or shared
memory ID.
Syntax
ipcrm [ options ]
Description
ipcrm removes one or more specified messages, a semaphore or
shared memory identifiers. The identifiers are specified by
the following options:
-q msqid removes the message queue identifier msqid from
the system and destroys the message queue and
data structure associated with it.
-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.
-s semid removes the semaphore identifier semid from the
system and destroys the set of semaphores and
data structure associated with it.
-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.
-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.
-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(S),
shmctl(S), and semctl(S). The identifiers and keys may be
found by using ipcs(C).
See Also
ipcs(C), msgctl(S), msgget(S), msgop(S), semctl(S),
semget(S), semop(S), shmctl(S), shmget(S), shmop(S)
Note
ipcrm cannot be used to remove semaphores created using
creatsem(S) or to remove shared memory created using
sdget(S).
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