LSIPC
Section: User Commands (1)
Updated: November 2015
Page Index
NAME
lsipc - show information on IPC facilities currently employed in the system
SYNOPSIS
lsipc
[options]
DESCRIPTION
lsipc
shows information on the System V inter-process communication facilities
for which the calling process has read access.
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.
It is possible to override the default output format for this option with the
--list, --raw, --json or --export option.
- -g, --global
-
Show system-wide usage and limits of IPC resources.
This option may be combined with one of the three resource options:
-m,
-q or
-s.
The default is to show information about all resources.
- -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 formatting
- -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 when --id
is used.
- -n, --newline
-
Display each piece of information on a separate line.
- --noheadings
-
Do not print a header line.
- --notruncate
-
Don't truncate output.
- -o, --output list
-
Specify which output columns to print. Use
--help
to get a list of all supported columns.
- -b, --bytes
-
Print size in bytes rather than in human readable format.
- -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(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.
- --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.
- -P, --numeric-perms
-
Print numeric permissions in PERMS column.
EXIT STATUS
- 0
-
if OK,
- 1
-
if incorrect arguments specified,
- 2
-
if a serious error occurs.
HISTORY
The
lsipc utility is inspired by the
ipcs utility.
AUTHORS
Ondrej Oprala
Karel Zak
SEE ALSO
ipcmk(1),
ipcrm(1),
msgrcv(2),
msgsnd(2),
semget(2),
semop(2),
shmat(2),
shmdt(2),
shmget(2),
sysvipc(7)
AVAILABILITY
The lsipc command is part of the util-linux package and is available from
Linux Kernel Archive