ipcmk - make various IPC resources

NAME SYNOPSIS DESCRIPTION OPTIONS AUTHORS SEE ALSO REPORTING BUGS AVAILABILITY

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.