ipcmk — make various IPC resources
Examples (TL;DR)
-
Create a shared memory segment:
ipcmk --shmem segment_size_in_bytes -
Create a semaphore:
ipcmk --semaphore element_size -
Create a message queue:
ipcmk --queue -
Create a shared memory segment with specific permissions (default is 0644):
ipcmk --shmem segment_size_in_bytes octal_permissons
Synopsis
ipcmk [options]
Description
ipcmk allows you to create 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.
- -V, --version
Display version information and exit.
- -h, --help
Display help text and exit.
See Also
Availability
The ipcmk command is part of the util-linux package and is available from Linux Kernel Archive.
Referenced By
ipcrm(1), ipcs(1), lsipc(1), pcp-ipcs(1), sysvipc(7).