showkey

Display the keycode of pressed keys on the keyboard, helpful for debugging keyboard-related issues and key remapping. More information: https://manned.org/showkey.

• View keycodes in decimal:

sudo showkey

• Display scancodes in hexadecimal:

sudo showkey -s|–scancodes

• Display keycodes in decimal (default):

sudo showkey -k|–keycodes

• Display keycodes in ASCII, decimal, and hexadecimal:

sudo showkey -a|–ascii

• Exit the program:

Ctrl + d