tldr/pages/common/ipcs.md

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# 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]reators 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`