ipcs

Show information about the usage of XSI IPC facilities: shared memory segments, message queues, and semaphore arrays. More information: https://manned.org/ipcs.1p.

• Show information about all the IPC:

ipcs -a

• Show information about active shared [m]emory segments, message [q]ueues or [s]empahore sets:

ipcs {{-m|-q|-s}}

• Show information on maximum allowable size in [b]ytes:

ipcs -b

• Show [c]reator’s user name and group name for all IPC facilities:

ipcs -c

• Show the [p]ID of the last operators for all IPC facilities:

ipcs -p

• Show access [t]imes for all IPC facilities:

ipcs -t

• Show [o]utstanding usage for active message queues, and shared memory segments:

ipcs -o