ipcmk(1) — Linux manual page

IPCMK(1)                      User Commands                      IPCMK(1)

NAME         top

       ipcmk - make various IPC resources

SYNOPSIS         top

       ipcmk [options]

DESCRIPTION         top

       ipcmk allows you to create POSIX and System V inter-process
       communication (IPC) objects: shared memory segments, message
       queues, and semaphore (arrays for System V).

OPTIONS         top

       Resources can be specified with these options:

       -M, --shmem size
           Create a shared memory segment of size bytes. The size
           argument may be followed by the multiplicative suffixes KiB
           (=1024), MiB (=1024*1024), and so on for GiB, etc. (the "iB"
           is optional, e.g., "K" has the same meaning as "KiB") or the
           suffixes KB (=1000), MB (=1000*1000), and so on for GB, etc.

       -m, --posix-shmem size
           Create a POSIX shared memory segment of size bytes. The size
           argument may be followed by the multiplicative suffixes KiB
           (=1024), MiB (=1024*1024), and so on for GiB, etc. (the "iB"
           is optional, e.g., "K" has the same meaning as "KiB") or the
           suffixes KB (=1000), MB (=1000*1000), and so on for GB, etc.

       -Q, --queue
           Create a message queue.

       -q, --posix-mqueue
           Create a POSIX message queue.

       -S, --semaphore number
           Create a semaphore array with number of elements.

       -s, --posix-semaphore
           Create a POSIX named semaphore.

       -n, --name name
           Name of the POSIX IPC object. This option is mandatory for
           POSIX IPC objects.

       Other options are:

       -p, --mode mode
           Access permissions for the resource. Default is 0644.

       -h, --help
           Display help text and exit.

       -V, --version
           Display version and exit.

AUTHORS         top

       Hayden A. James <[email protected]>, Prasanna Paithankar
       <[email protected]>

SEE ALSO         top

       ipcrm(1), ipcs(1), lsipc(1), sysvipc(7)

REPORTING BUGS         top

       For bug reports, use the issue tracker
       <https://github.com/util-linux/util-linux/issues>.

AVAILABILITY         top

       The ipcmk command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
       part of the util-linux (a random collection of Linux utilities)
       project. Information about the project can be found at 
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
       bug report for this manual page, send it to
       [email protected]. This page was obtained from the
       project's upstream Git repository
       ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
       2025-08-11. (At that time, the date of the most recent commit that
       was found in the repository was 2025-08-05.) If you discover any
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       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a
       mail to [email protected]

util-linux 2.42-start-521-ec46  2025-08-09                       IPCMK(1)

Pages that refer to this page: ipcrm(1),  ipcs(1),  lsipc(1),  pcp-ipcs(1),  sysvipc(7)

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