NAME
     ipcs - display status of System V IPC objects

SYNOPSIS
     ipcs [-abcmopqst]

DESCRIPTION
     The ipcs program is an emulation of the ipcs(1) program on System V.  It
     displays the type, ID, key, mode, owner and group of each IPC object,
     with additional fields as requested by the following options:

     -a      Display all of the information about all of the IPC objects.  It
             is the inclusive `or' of -bcopt.

     -b      Display information about IPC object sizes.  For message queue
             objects, this provides the maximum queue size in bytes; for
             shared memory objects, this provides the segment size in bytes;
             for semaphore objects, this provides the semaphore count.

     -c      Display the user name and group name of each IPC object's cre-
             ator.

     -m      Display only information about shared memory objects.

     -o      Display information about IPC object usage.  For message queue
             objects, this provides the currently used queue bytes and current
             number of messages in the queue; for shared memory objects, this
             provides the current number of mappings that use the given ob-
             ject.

     -p      For message queue objects, display the process IDs of the last
             process to send a message and the last process to receive one.

     -q      Display only information about message queue objects.

     -s      Display only information about semaphore objects.

     -t      Display time information about IPC objects.  For message queue
             objects, this provides the time of the last send operation, the
             time of the last receive operation, and the time that the object
             descriptor was last changed; for shared memory objects, this pro-
             vides the last time the segment was attached, the last time it
             was detached, and the last time that the object descriptor was
             changed; for semaphores, this provides the last time that se-
             mop(3) was called and the last time that the object descriptor
             was changed.

SEE ALSO
     stdipc(3),  ibcs2(5)