LSIPC(1)                                User Commands                               LSIPC(1)

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 op‐
              tion  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 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 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 sup‐
              ported 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) opera‐
              tion 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 ⟨ooprala@redhat.com⟩
       Karel Zak ⟨kzak@redhat.com⟩

AVAILABILITY
       The lsipc command is part of the util-linux  package  and  is  available  from  Linux
       Kernel Archive ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩.

util-linux                              November 2015                               LSIPC(1)

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