Manual: ipcmk

IPCMK(1)						User Commands						    IPCMK(1)

NAME
       ipcmk - make various IPC resources

SYNOPSIS
       ipcmk [options]

DESCRIPTION
       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
       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
       Hayden A. James , Prasanna Paithankar 

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

REPORTING BUGS
       For bug reports, use the issue tracker .

AVAILABILITY
       The ipcmk command is part of the util-linux package which can be downloaded from Linux Kernel Archive
       .

util-linux 2.41.3					 2025-12-15						    IPCMK(1)