showkey - examine the codes sent by the keyboard

To examine the codes sent by the keyboard
$ sudo showkey

To display print options
$ sudo showkey -h

To start showkey in scan code dump mode
$ sudo showkey -s

To start showkey in keycode dump mode
$ sudo showkey -k

To start showkey in `ascii‘ dump mode.
$ sudo showkey -a



regards,
T.Dhanasekar