Show information on System V IPC facilities.
ipcs [-m] [-q] [-s] [-a]
ipcs -l
ipcs -u
ipcs -i <id> {-m|-q|-s}
Reads /proc/sysvipc/{shm,msg,sem} to display information about active
System V IPC resources.
| Source | Purpose |
|---|
/proc/sysvipc/shm | Shared memory segments |
/proc/sysvipc/msg | Message queues |
/proc/sysvipc/sem | Semaphore arrays |
/proc/sys/kernel/shm* | Shared memory limits |
/proc/sys/kernel/msg* | Message queue limits |
/proc/sys/kernel/sem | Semaphore limits |
| Option | Description |
|---|
-m, --shmems | Show shared memory segments |
-q, --queues | Show message queues |
-s, --semaphores | Show semaphore arrays |
-a, --all | Show all three (default) |
-l, --limits | Show system resource limits |
-u, --summary | Show usage summary |
-c, --creator | Show creator and owner |
-p, --pid | Show PIDs of creator and last operator |
-t, --time | Show time information |
-i, --id <id> | Show details for one resource (with -m/-q/-s) |
-b, --bytes | Show sizes in bytes |
-h, --help | Display help |
-V, --version | Display version |
| Code | Meaning |
|---|
| 0 | Success |
| 1 | Failure |
-i <id> single resource detail view-c creator/owner view-p PID view-t time view--human human-readable sizes