1IPCS(1)                          User Commands                         IPCS(1)
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NAME

6       ipcs - provide information on IPC facilities
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SYNOPSIS

9       ipcs [resource-option] [output-format]
10       ipcs [resource-option] -i id
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DESCRIPTION

13       ipcs provides information on the inter-process communication facilities
14       for which the calling process has read access.
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OPTIONS

17       -i, --id id
18              Print details only on the resource identified by id.
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20       -h, --help
21              Display a help text and exit.
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23       -V, --version
24              Display version information and exit.
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26   Resource options
27       -q, --queues
28              Write information about active message queues.
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30       -m, --shmems
31              Write information about active shared memory segments.
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33       -s, --semaphores
34              Write information about active semaphore sets.
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36       -a, --all
37              Write information about all three resources (default).
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39   Output formats
40       Of these options only one takes effect: the last one specified.
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42       -c, --creator
43              Show creator and owner.
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45       -l, --limits
46              Show resource limits.
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48       -p, --pid
49              Show PIDs of creator and last operator.
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51       -t, --time
52              Write time information.  The time of the last control  operation
53              that changed the access permissions for all facilities, the time
54              of the last msgsnd() and msgrcv() operations on message  queues,
55              the  time  of  the last shmat() and shmdt() operations on shared
56              memory, and the time of the  last  semop()  operation  on  sema‐
57              phores.
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59       -u, --summary
60              Show status summary.
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62   Representation
63       These affect only the -l (--limits) option.
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65       -b, --bytes
66              Print sizes in bytes.
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68       --human
69              Print sizes in human-readable format.
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SEE ALSO

72       ipcrm(1),   ipcmk(1),   msgrcv(2),   msgsnd(2),   semget(2),  semop(2),
73       shmat(2), shmdt(2), shmget(2)
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CONFORMING TO

76       The Linux ipcs utility is not fully compatible to the POSIX ipcs  util‐
77       ity.   The  Linux  version  does  not  support  the POSIX -a, -b and -o
78       options, but does support the -l and -u options not defined  by  POSIX.
79       A  portable  application  shall  not  use  the  -a,  -b, -o, -l, and -u
80       options.
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AUTHOR

83       Krishna Balasubramanian ⟨balasub@cis.ohio-state.edu⟩
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AVAILABILITY

86       The ipcs command is part of the util-linux  package  and  is  available
87       from  Linux  Kernel Archive ⟨ftp://ftp.kernel.org/pub/linux/utils/util-
88       linux/⟩.
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92util-linux                       January 2013                          IPCS(1)
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