NAME

ipcrm − remove a message queue, semaphore set

SYNTAX

ipcrm [options]

DESCRIPTION

The ipcrm command removes one or more specified messages, semaphores or shared memory identifiers.

The details of the removes are described in msgctl(,), shmctl(,), and semctl(.). The identifiers and keys may be found by ipcs(.).

OPTIONS

−q msqidRemoves the message queue identifier msqid from the system and destroys the message queue and data structure associated with it. 

−m shmidRemoves 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 semidRemoves the semaphore identifier semid from the system and destroys the set of semaphores and data structure associated with it. 

−Q msgkeyRemoves the message queue identifier, created with key msgkey, from the system and destroys the message queue and data structure associated with it. 

−M shmkeyRemoves 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 semkeyRemoves the semaphore identifier, created with key semkey, from the system and destroys the set of semaphores and data structure associated with it. 

SEE ALSO

ipcs(1), msgctl(2), msgget(2), msgop(2), semctl(2), semget(2), semop(2), shmctl(2), shmget(2), shmop(2)