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ipcrm(1) General Commands Manual ipcrm(1) NAME ipcrm - Removes message queue, semaphore set, or shared memory identi- fiers SYNOPSIS ipcrm [-m shared_memory] [-M shared_memory_key] [-q message_queue] [-Q message_key] [-s semaphore_ID] [-S semaphore_key] The ipcrm command removes one or more message queue, semaphore set, or shared memory identifiers. OPTIONS Removes the shared memory identifier shared_memory. The shared memory segment and data structure associated with shared_memory are also re- moved after the last detach operation. Removes the shared memory iden- tifier, created with key shared_memory_key. The shared memory segment and data structure associated with it are also removed after the last detach. Removes the message queue identifier message_queue and the message queue and data structure associated with it. Removes the mes- sage queue identifier, created with key message_key, and the message queue and data structure associated with it. Removes the semaphore identifier semaphore_ID and the set of semaphores and data structure associated with it. Removes the semaphore identifier, created with key semaphore_key, and the set of semaphores and data structure associated with it. DESCRIPTION The details of the remove operations are described in the Section 2 reference pages for msgctl(), shmctl(), and semctl(). The identifiers and keys can be found by using the ipcs command. EXAMPLES To remove the shared memory segment associated with shared memory iden- tifier 18602, enter: ipcrm -m 18602 SEE ALSO Commands: ipcs(1) Functions: msgctl(2), msgget(2), semctl(2), semget(2), semop(2), shm- ctl(2), shmget(2) ipcrm(1)