IPCRM(1)

NAME
ipcrm - remove the specified message queues, semaphore sets, and shared memory segments

SYNOPSIS
ipcrm [-M shmkey] [-m shmid] [-Q msgkey] [-q msqid] [-S semkey] [-s semid] ...

DESCRIPTION
ipcrm removes the specified message queues, semaphores, and shared memory segments. These System V IPC objects can be specified by their creation ID or any associated key.

The options are as follows:

-M shmkey
    Mark the shared memory segment associated with key shmkey for removal. This marked segment will be destroyed after the last detach.

-m shmid
    Mark the shared memory segment associated with ID shmid for removal. This marked segment will be destroyed after the last detach.

-Q msgkey
    Remove the message queue associated with key msgkey from the system.

-q msqid
    Remove the message queue associated with the ID msqid from the system.

-S semkey
    Remove the semaphore set associated with key semkey from the system.

-s semid
    Removes the semaphore set associated with ID semid from the system.

The identifiers and keys associated with these System V IPC objects can be determined by using ipcs(1).

RESTRICTIONS
On Cygwin, System V IPC only works when the cygserver service is running and the CYGWIN environment variable for the client contains the word "server". See /usr/share/doc/Cygwin/cygserver.README and the Cygwin user's guide.

SEE ALSO
ipcs(1)

STANDARDS
The ipcrm utility is compliant with the xpg4 specification.