keyboard-request(7) - Linux man page
Name
keyboard-request - event signalling console press of Alt-UpArrowSynopsis
keyboard-request [ENV]...Description
The keyboard-request event is generated by the Upstart init(8) daemon when the keyboard request key combination (typically Alt-UpArrow) is pressed on the console.The support for this event depends on your kernel configuration. Suggested use for this event includes spawning a new login console when pressed, or for secure attention key support.
This event is not handled in the default Upstart configuration.
Example
A task to be run on the keyboard request might use:start on keyboard-request