OSF

NAME

ipcrm − Removes message queue, semaphore set, or shared memory identifiers

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. 

FLAGS

-m shared_memory
Removes the shared memory identifier shared_memory.  The shared memory segment and data structure associated with shared_memory are also removed after the last detach operation. 

-M shared_memory_key
Removes the shared memory identifier, created with key shared_memory_key.  The shared memory segment and data structure associated with it are also removed after the last detach. 

-q message_queue
Removes the message queue identifier message_queue and the message queue and data structure associated with it. 

-Q message_key
Removes the message queue identifier, created with key message_key, and the message queue and data structure associated with it. 

-s semaphore_ID
Removes the semaphore identifier semaphore_ID and the set of semaphores and data structure associated with it. 

-S semaphore_key
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 identifier 18602, enter:

ipcrm -m 18602

RELATED INFORMATION

Commands:  ipcs(1). 

Functions:  msgctl(2), msgget(2), semctl(2), semget(2), semop(2), shmctl(2), shmget(2).