lsipc Man page

LSIPC(1) User Commands LSIPC(1)


lsipc – show information on IPC facilities currently employed in the


lsipc [options]


lsipc shows information on the inter-process communication facilities
for which the calling process has read access.


-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. The default –id output format
is possible to override by the –list –raw –json or –export

-g, –global
Show system-wide usage and limits for a single IPC type. This
option may be combined with one of the three resource options:
-m, -q or -s. The default is to show information about all

-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.

Output formats
-c, –creator
Show creator and owner.

-e, –export
Output data in the format of NAME=VALUE.

-J, –json
Use the JSON output format.

-l, –list
Use the list output format. This is the default except for –id.

-n, –newline
Display each piece of information on a separate line.

Do not print a header line.

Don’t truncate output.

-o, –output list
Specify which output columns to print. Use –help to get a list
of all supported columns.

-p, –pid
Show PIDs of creator and last operator.

-r, –raw
Raw output (no columnation).

-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() and msgrcv() operations on message queues,
the time of the last shmat() and shmdt() operations on shared
memory, and the time of the last semop() operation on sema‐

–time-format type
Display dates in short, full or iso format. The default is
short, this time format is designed to be space efficient and
human readable.

0 if OK,

1 if incorrect arguments specified,

2 if a serious error occurs.


ipcrm, ipcmk, msgrcv(2), msgsnd, semget(2), semop(2),
shmat(2), shmdt(2), shmget(2)

The lsipc utility is inspired by the ipcs utility.

Ondrej Oprala ⟨⟩
Karel Zak ⟨⟩

The lsipc command is part of the util-linux package and is available
from Linux Kernel Archive ⟨

util-linux June 2015 LSIPC(1)

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