ipcmk — Create IPC (Inter-process Communication) resources. More information: <https://manned.org/ipcmk>.

Create a shared memory segment

ipcmk {{[-M|--shmem]}} {{segment_size_in_bytes}}

Create a semaphore

ipcmk {{[-S|--semaphore]}} {{element_size}}

Create a message queue

ipcmk {{[-Q|--queue]}}

Create a shared memory segment with specific permissions (default is 0644)

ipcmk {{[-M|--shmem]}} {{segment_size_in_bytes}} {{octal_permissions}}