service
ARES System Manual: exec Shell

(input) @service <service> <message>

Sends a command to the specified daemons. Most daemons may be accessed this way (see list on the main page). However, to control the io daemon, see the vox command.

Shell built-in command: This command is part of the exec shell and does not have a corresponding system binary. It must be used shell scripts without a preceding @ and cannot be called directly with the system invoke() API.

To call daemons directly from within programs, use the call() API function as defined in ARES/api/api.h.lsl.