evtest
TLDR
List all detected input devices
$ sudo evtest
Display events from a specific device$ sudo evtest /dev/input/event[number]
Grab device exclusively$ sudo evtest --grab /dev/input/event[number]
Query state of a key or button$ sudo evtest --query /dev/input/event[number] [event_type] [event_code]
SYNOPSIS
evtest [options] [device]
DESCRIPTION
evtest displays information from input device drivers using the Linux input subsystem. It reads and displays input events like key presses, mouse movements, and touch events.
Useful for debugging input devices and testing driver functionality.
PARAMETERS
--grab
Grab device exclusively--query device type code
Query state of specific input
CAVEATS
Requires root privileges. Device paths are in /dev/input/. Grabbing a device prevents other applications from receiving events.
