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 <hayden.james@gmail.com>, Prasanna Paithankar
<paithankarprasanna@gmail.com>
SEE ALSO
ipcrm(1), ipcs(1), lsipc(1), sysvipc(7)
REPORTING BUGS
For bug reports, use the issue tracker
<https://github.com/util-linux/util-linux/issues>.
AVAILABILITY
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/>.
util-linux 2.41 2025-02-26 IPCMK(1)
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