IPCMK(1) User Commands IPCMK(1)

ipcmk - make various IPC resources

ipcmk [options]

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).

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.

Hayden A. James <hayden.james@gmail.com>, Prasanna Paithankar <paithankarprasanna@gmail.com>

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

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

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/.

2025-03-29 util-linux 2.41