*ipcmk* allows you to create System V inter-process communication (IPC) objects: shared memory segments, message queues, and semaphore arrays.
== 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.
*-Q*, *--queue*::
Create a message queue.
*-S*, *--semaphore* _number_::
Create a semaphore array with _number_ of elements.
Other options are:
*-p*, *--mode* _mode_::
Access permissions for the resource. Default is 0644.