DOKK / manpages / debian 12 / cec-utils / cec-client.1.en
CEC-CLIENT(1) General Commands Manual CEC-CLIENT(1)

cec-client - CEC connection client utility

cec-client {-h|--help|-l|--list-devices|[COM PORT]}

Shows this help text
List all devices on this system
The device type to use. More than one is possible.
The HDMI port to use as active source.
The logical address of the device to with this adapter is connected.
Writes all libCEC log message to a file
and log levels to a file.
Sets the log level. See cectypes.h for values.
Execute a single command and exit. Does not power on devices on startup and power them off on exit.
[COM PORT]
The com port to connect to. If no COM port is given, the client tries to connect to the first device that is detected.

Type 'h' or 'help' and press enter after starting the client to display all available commands

January 2012 User Commands