xmodmap

Utility for modifying keymaps and pointer button mappings in X. More information: https://manned.org/xmodmap.

• Swap left-click and right-click on the pointer:
  xmodmap -e 'pointer = 3 2 1'
• Reassign a key on the keyboard to another key:
  xmodmap -e 'keycode {{keycode}} = {{keyname}}'
• Disable a key on the keyboard:
  xmodmap -e 'keycode {{keycode}} ='
• Execute all xmodmap expressions in the specified file:
  xmodmap {{path/to/file}}