acpi_listen

Listen to any ACPI event while the daemon is running

$ acpi_listen

acpi_listen [-h]

acpi_listen monitors and displays ACPI (Advanced Configuration and Power Interface) events from the kernel in real-time. Events include power button presses, lid open/close, AC adapter connection, battery status changes, and thermal events.
The tool connects to the acpid daemon socket to receive events. Each event is printed to standard output as it occurs.

-h, --help

Display help information

Requires the acpid daemon to be running. Events will not be received if acpid is not active or if the user lacks permission to access the ACPI socket.

Part of the acpid (ACPI daemon) package, which provides a framework for handling ACPI events on Linux systems.

acpi(1), acpid(8)