from small one page howto to huge articles all in one place
poll results
Last additions:
May 25th. 2007:
April, 26th. 2006:
| 
IPCS
Section: User Commands (1) Updated: July 2014 Index
Return to Main Contents
NAME
ipcs - show information on IPC facilities
SYNOPSIS
ipcs
[options]
DESCRIPTION
ipcs
shows information on the inter-process communication facilities
for which the calling process has read access.
By default it shows information about all three resources:
shared memory segments, message queues, and semaphore arrays.
OPTIONS
- -i, --id id
-
Show full details on just the one resource element identified by
id.
This option needs to be combined with one of the three resource options:
-m,
-q or
-s.
- -h, --help
-
Display help text and exit.
- -V, --version
-
Display version information and exit.
Resource options
- -m, --shmems
-
Write information about active shared memory segments.
- -q, --queues
-
Write information about active message queues.
- -s, --semaphores
-
Write information about active semaphore sets.
- -a, --all
-
Write information about all three resources (default).
Output formats
Of these options only one takes effect: the last one specified.
- -c, --creator
-
Show creator and owner.
- -l, --limits
-
Show resource limits.
- -p, --pid
-
Show PIDs of creator and last operator.
- -t, --time
-
Write time information. The time of the last control operation that changed
the access permissions for all facilities, the time of the last
msgsnd(2)
and
msgrcv(2)
operations on message queues, the time of the last
shmat(2)
and
shmdt(2)
operations on shared memory, and the time of the last
semop(2)
operation on semaphores.
- -u, --summary
-
Show status summary.
Representation
These affect only the -l ( --limits) option.
- -b, --bytes
-
Print sizes in bytes.
- --human
-
Print sizes in human-readable format.
SEE ALSO
ipcmk(1),
ipcrm(1),
msgrcv(2),
msgsnd(2),
semget(2),
semop(2),
shmat(2),
shmdt(2),
shmget(2)
CONFORMING TO
The Linux ipcs utility is not fully compatible to the POSIX ipcs utility.
The Linux version does not support the POSIX
-a,
-b
and
-o
options, but does support the
-l
and
-u
options not defined by POSIX. A portable application shall not use the
-a,
-b,
-o,
-l,
and
-u
options.
AUTHOR
Krishna Balasubramanian
AVAILABILITY
The ipcs command is part of the util-linux package and is available from
Linux Kernel Archive
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- Resource options
-
- Output formats
-
- Representation
-
- SEE ALSO
-
- CONFORMING TO
-
- AUTHOR
-
- AVAILABILITY
-
| 
|
|
- Running on 
-
:
: 