IPCRM(ADM)                           UNIX System V



     Name
          ipcrm - removes a message queue,  semaphore  set  or  shared
          memory ID


     Syntax
          ipcrm [ options ]


     Description
          ipcrm removes one or more specified messages, a semaphore or
          shared memory identifiers.  The identifiers are specified by
          the following options:

          -q msqid    removes the message queue identifier msqid  from
                      the  system  and  destroys the message queue and
                      data structure associated with it.

          -m shmid    removes the shared memory identifier shmid  from
                      the  system.  The shared memory segment and data
                      structure associated with it are destroyed after
                      the last detach.

          -s semid    removes the semaphore identifier semid from  the
                      system  and  destroys  the set of semaphores and
                      data structure associated with it.

          -Q msgkey   removes the message  queue  identifier,  created
                      with  key  msgkey,  from the system and destroys
                      the message queue and data structure  associated
                      with it.

          -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.

          -S semkey   removes the semaphore identifier,  created  with
                      key semkey, from the system and destroys the set
                      of semaphores and data structure associated with
                      it.

          The details of  the  removes  are  described  in  msgctl(S),
          shmctl(S),  and  semctl(S).  The identifiers and keys may be
          found by using ipcs(ADM).


     See Also
          ipcs(ADM),  msgctl(S),   msgget(S),   msgop(S),   semctl(S),
          semget(S), semop(S), shmctl(S), shmget(S), shmop(S)


     Note
          ipcrm cannot be used  to  remove  semaphores  created  using
          creatsem(S)   or  to  remove  shared  memory  created  using
          sdget(S).


     (printed 2/15/90)                                 IPCRM(ADM)