ipcmk

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

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_permissions}}