ipcs: fix POSIX page; linux/ipcs, lsipc: add pages (#12553)

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# ipcs
> Display information about resources used in IPC (Inter-process Communication).
> More information: <https://manned.org/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>.
- Specific information about the Message Queue which has the ID 32768:
`ipcs -qi 32768`
- General information about all the IPC:
- 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`

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# ipcs
> Show information about the usage of System V IPC facilities: shared memory segments, message queues, and semaphore arrays.
> See also: `lsipc` for a more flexible tool, `ipcmk` for creating IPC facilities, and `ipcrm` for deleting them.
> More information: <https://manned.org/ipcs>.
- Show information about all active IPC facilities:
`ipcs`
- Show information about active shared [m]emory segments, message [q]ueues or [s]empahore sets:
`ipcs {{--shmems|--queues|--semaphores}}`
- Show full details on the resource with a specific [i]D:
`ipcs {{--shmems|--queues|--semaphores}} --id {{resource_id}}`
- Show [l]imits in [b]ytes or in a human-readable format:
`ipcs --limits {{--bytes|--human}}`
- Show s[u]mmary about current usage:
`ipcs --summary`
- Show [c]reator's and owner's UIDs and PIDs for all IPC facilities:
`ipcs --creator`
- Show the [p]ID of the last operators for all IPC facilities:
`ipcs --pid`
- Show last access [t]imes for all IPC facilities:
`ipcs --time`

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# lsipc
> Show information on System V IPC facilities currently employed in the system.
> See also: `ipcs` for the older tool.
> More information: <https://manned.org/lsipc>.
- Show information about all active IPC facilities:
`lsipc`
- Show information about active shared [m]emory segments, message [q]ueues or [s]empahore sets:
`lsipc {{--shmems|--queues|--semaphores}}`
- Show full details on the resource with a specific [i]D:
`lsipc {{--shmems|--queues|--semaphores}} --id {{resource_id}}`
- Print the given [o]utput columns (see all supported columns with `--help`):
`lsipc --output {{KEY,ID,PERMS,SEND,STATUS,NSEMS,RESOURCE,...}}`
- Use [r]aw, [J]SON, [l]ist or [e]xport (key="value") format:
`lsipc {{--raw|--json|--list|--export}}`
- Don't truncate the output:
`lsipc --notruncate`