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UNIX in a Nutshell: System V Edition

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UNIX Commands
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ipcs [options]

Print data about active interprocess communication facilities.



Report on active shared memory segments.


Report on active message queues.


Report on active semaphores.

With the -m, -q, or -s options, only the specified interprocess facility is reported on. Otherwise information about all three is printed.


Use all of the print options (short for -bcopt).


Report maximum allowed number of message bytes, segment sizes, and number of semaphores.


Report the creator's login name and group.


Read status from file instead of from /dev/kmem.


Use the argument for the named list instead of /stand/unix.


Report outstanding usage.


Report process numbers.


Report time information.

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