How to run a bash script on button press and terminate on release?

Question

Electronics

There is a task:
- We pressed and hold the button connected via the Raspberry pi 3+ GPIO comb - The
script started
- The button was released
- The script was forced to stop
Googling did not help, I found only the launch of the script
How can this be implemented? Generally. not necessarily bash, you can python. php

Answer 1

on click, run the script in the background, in the script write its PID
to the file, kill it on release
kill $(cat myscript.pid)

Answer 2

You can stop and continue the execution of a process in Linux using the kill function .
Here is an example in Python.