NAME

ipcrm − remove a message queue, semaphore set or shared memory id

SYNOPSIS

ipcrm [ options ]

DESCRIPTION

ipcrm will remove one or more specified message, 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(2), shmctl(2), and semctl(2).  The identifiers and keys may be found by using ipcs(1). 

SEE ALSO

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

Version 2.5  —  April 22, 1987