LSIPC(1) - man page online | user commands

Show information on IPC facilities currently employed in the system.

June 2015
LSIPC(1)                                  User Commands                                  LSIPC(1)


lsipc - show information on IPC facilities currently employed in the system


lsipc [options]


lsipc shows information on the inter-process communication facilities for which the call‐ ing 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 options. -g, --global Show system-wide usage and limits for a single IPC type. This option may be com‐ bined 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 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. --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. -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 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.


0 if OK, 1 if incorrect arguments specified, 2 if a serious error occurs.


ipcrm(1), ipcmk(1), msgrcv(2), msgsnd(2), 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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lsipc(1) referred by
refer to ipcmk(1) | ipcrm(1) | msgop(2) | semget(2) | semop(2) | shmget(2) | shmop(2)