linux - How to read key charcode in bash?

Question

I have simple script written in bash:

#!/bin/bash
while true; do
read -rsn1 input
if [ "$input" = "a" ]; then
firefox;
fi
done

Is it possibile to read not char name but charcode correct to xmodmap command?

question from:https://stackoverflow.com/questions/66050208/how-to-read-key-charcode-in-bash

Answer 1

Waitting for answers