# lsipc(1) - man - phpman > **TLDR:** Show information on System V IPC facilities currently employed in the system. > - Show information about all active IPC facilities: `lsipc` - Show information about active shared [m]emory segments, message [q]ueues, or [s]empahore sets: `lsipc {{-shmems|--queues|--semaphores}}` - Show full details on the resource with a specific ID: `lsipc {{-shmems|--queues|--semaphores}} {{-i|--id}} {{resource_id}}` - Print the given output columns (see all supported columns with `--help`): `lsipc {{-o|--output}} {{KEY,ID,PERMS,SEND,STATUS,NSEMS,RESOURCE,...}}` - Use [r]aw, [J]SON, [l]ist, or [e]xport (key="value") format: `lsipc {{-raw|--json|--list|--export}}` - Don't truncate the output: `lsipc --notruncate` *Source: tldr-pages* --- [LSIPC(1)](https://www.chedong.com/phpMan.php/man/LSIPC/1/markdown) User Commands [LSIPC(1)](https://www.chedong.com/phpMan.php/man/LSIPC/1/markdown) ## 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 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 Produce output in the form of key="value" pairs. All potentially unsafe value characters are hex-escaped (\x). ### -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 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)](https://www.chedong.com/phpMan.php/man/msgsnd/2/markdown) and [**msgrcv**(2)](https://www.chedong.com/phpMan.php/man/msgrcv/2/markdown) operations on message queues, the time of the last [**shmat**(2)](https://www.chedong.com/phpMan.php/man/shmat/2/markdown) and [**shmdt**(2)](https://www.chedong.com/phpMan.php/man/shmdt/2/markdown) operations on shared memory, and the time of the last [**semop**(2)](https://www.chedong.com/phpMan.php/man/semop/2/markdown) 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**(1)](https://www.chedong.com/phpMan.php/man/ipcs/1/markdown) utility. ## AUTHORS Ondrej Oprala <>, Karel Zak <> ## SEE ALSO [**ipcmk**(1)](https://www.chedong.com/phpMan.php/man/ipcmk/1/markdown), [**ipcrm**(1)](https://www.chedong.com/phpMan.php/man/ipcrm/1/markdown), [**msgrcv**(2)](https://www.chedong.com/phpMan.php/man/msgrcv/2/markdown), [**msgsnd**(2)](https://www.chedong.com/phpMan.php/man/msgsnd/2/markdown), [**semget**(2)](https://www.chedong.com/phpMan.php/man/semget/2/markdown), [**semop**(2)](https://www.chedong.com/phpMan.php/man/semop/2/markdown), [**shmat**(2)](https://www.chedong.com/phpMan.php/man/shmat/2/markdown), [**shmdt**(2)](https://www.chedong.com/phpMan.php/man/shmdt/2/markdown), [**shmget**(2)](https://www.chedong.com/phpMan.php/man/shmget/2/markdown), [**sysvipc**(7)](https://www.chedong.com/phpMan.php/man/sysvipc/7/markdown) ## REPORTING BUGS For bug reports, use the issue tracker at . ## AVAILABILITY The **lsipc** command is part of the util-linux package which can be downloaded from Linux Kernel Archive <>. util-linux 2.37.2 2026-03-06 [LSIPC(1)](https://www.chedong.com/phpMan.php/man/LSIPC/1/markdown)