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LSIPC

Section: User Commands (1)
Updated: November 2015
Index Return to Main Contents
 

NAME

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

SYNOPSIS

lsipc [options]  

DESCRIPTION

lsipc shows information on the 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.
 

SEE ALSO

ipcmk(1), ipcrm(1), msgrcv(2), msgsnd(2), semget(2), semop(2), shmat(2), shmdt(2), shmget(2)  

HISTORY

The lsipc utility is inspired by the ipcs utility.  

AUTHORS

Ondrej Oprala
Karel Zak

 

AVAILABILITY

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
Resource options
Output formatting
EXIT STATUS
SEE ALSO
HISTORY
AUTHORS
AVAILABILITY





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