input-events - print input events
input-events [-t sec] [-g] devnr
input-events listens for events on kernel input device devnr and prints them.
devnr The index of the input device to use (0 for /dev/input/event0 and so on). -g Grab device using EVIOCGRAB, i.e., get exclusive access to the device. -t sec Set the timeout. The program will quit after sec seconds without activity.
lsinput(8)
Gerd Knorr. July 2005