ipcrm(1)

ipcrm -- remove a message queue, semaphore set, dynamic shared memory ID, or shared memory ID

Synopsis

ipcrm [-q msqid] [-m shmid] [-s semid] [-d dshmid] [-Q msgkey] [-M shmkey] [-S semkey] [-D dshmkey]

Description

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

Options

The identifiers are specified by the following options:

-d dshmid: Remove the dynamic shared memory identifier dshmid from the system. The dynamic shared memory segment and data structure associated with it are destroyed after the last detach.
-D dshmkey: Removes the dynamic shared memory identifier, created with key dshmkey, from the system. The shared memory segment and data structure associated with it are destroyed after the last detach.
-m shmid: Remove the shared memory identifier shmid from the system. The shared memory segment and data structure associated with it are destroyed after the last detach.
-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.
-q msqid: Remove the message queue identifier msqid from the system and destroy the message queue and data structure associated with it.
-Q msgkey: Remove the message queue identifier, created with key msgkey, from the system and destroy the message queue and data structure associated with it.
-s semid: Remove the semaphore identifier semid from the system and destroy the set of semaphores and data structure associated with it.
-S semkey: Remove the semaphore identifier, created with key semkey, from the system and destroy the set of semaphores and data structure associated with it.

References

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