xev
Print contents of X events. More information: https://gitlab.freedesktop.org/xorg/app/xev.
- Monitor all occurring X events:
xev
- Monitor all X events of the root window instead of creating a new one:
xev -root
- Monitor all X events of a particular window:
xev -id {{window_id}}
- Monitor X events from a given category (can be specified multiple times):
xev -event {{event_category}}