How can I know which of the /dev/input/eventX (X=0

Question

I am trying to capture linux keyboard/mouse input, and I am reading events from like /dev/input/event2. But it seems the input are sometimes directed to /dev/input/event2, sometimes to /dev/input/event3. I wonder if there is a place I can find out which of the stream has the input?

Answer 1

To find out, go to /dev/input/by-id or /dev/input/by-path and do a ls -l to find out which symlink points to which event<*>.

Also, I thought it would be helpful for all those who come across this page to find this helpful link to some code which captures keyboard events.

Answer 2

Using evtest is very helpful. It can list all your input devices by name, and allows you to monitor each device's events.

Answer 3

Run this in Terminal, it will work just fine:

cat /proc/bus/input/devices | awk '/keyboard/{for(a=0;a>=0;a++){getline;{if(/kbd/==1){ print 
$NF;exit 0;}}}}'

Source

Answer 4

Just stumbled across this -- rather late in the day.

You can find out the names and other attributes of different devices using:

cat /proc/bus/input/devices