Ipcs
show information on IPC facilities
Output sample
------ Message Queues --------
key msqid owner perms used-bytes messages
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x012215f4 0 postgres 600 56 6
0x0052e6a9 1 postgres 600 56 6
0x00000000 6 yourname 600 524288 2 dest
0x00000000 65576 yourname 606 11839932 2 dest
0x00000000 65577 yourname 606 11839932 2 dest
0x00000000 426037 yourname 600 65376 2 dest
------ Semaphore Arrays --------
key semid owner perms nsems
Help
Usage:
ipcs [resource-option...] [output-option]
ipcs -m|-q|-s -i <id>
Show information on IPC facilities.
Options:
-i, --id <id> print details on resource identified by <id>
-h, --help display this help
-V, --version display version
Resource options:
-m, --shmems shared memory segments
-q, --queues message queues
-s, --semaphores semaphores
-a, --all all (default)
Output options:
-t, --time show attach, detach and change times
-p, --pid show PIDs of creator and last operator
-c, --creator show creator and owner
-l, --limits show resource limits
-u, --summary show status summary
--human show sizes in human-readable format
-b, --bytes show sizes in bytes
For more details see ipcs(1).