ipcs — show information on IPC facilities
ipcs shows information on the inter-process communication facilities for which the calling process has read access. By default it shows information about all three resources: shared memory segments, message queues, and semaphore arrays.
Show full details on just the one resource element
identified by id. This option needs
to be combined with one of the three resource options:
Display help text and exit.
Display version information and exit.
Write information about active shared memory segments.
Write information about active message queues.
Write information about active semaphore sets.
Write information about all three resources (default).
Of these options only one takes effect: the last one specified.
Show creator and owner.
Show resource limits.
Show PIDs of creator and last operator.
Write time information. The time of the last
control operation that changed the access permissions
for all facilities, the time of the last
msgrcv() operations on message
queues, the time of the last
shmdt() operations on shared
memory, and the time of the last
semop() operation on
Show status summary.
The Linux ipcs utility is not fully compatible to the
POSIX ipcs utility. The Linux version does not support the
−o options, but does support the
−u options not defined by POSIX. A
portable application shall not use the
The ipcs command is part of the util-linux package and is available from Linux Kernel Archive
Copyright 1993 Rickard E. Faith (faithcs.unc.edu)
May be distributed under the GNU General Public License