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UNIX in a Nutshell: System V Edition

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UNIX Commands
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ipcrm [options]

Remove a message queue, semaphore set, or shared memory identifier as specified by the options. ipcrm is useful for freeing shared memory left behind by programs that failed to de-allocate the space. Use ipcs first to list items to remove.


-m shmid

Remove shared memory identifier shmid.

-M shmkey

Remove shmid created with key shmkey.

-q msqid

Remove message queue identifier msqid.

-Q msgkey

Remove msqid created with key msgkey.

-s semid

Remove semaphore identifier semid.

-S semkey

Remove semid created with key semkey.

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