ipcrm(1)ipcrm(1)NAMEipcrm - Removes message queue, semaphore set, or shared memory identi‐
fiers
SYNOPSISipcrm [-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.
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
ipcrm: XCU5.0
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
OPTIONS
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. Removes the shared memory
identifier, created with key shared_memory_key. The shared memory seg‐
ment 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
message 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)