Logitech Performance Mouse MX - thumb button as middle-mouse

gistfile1.sh

#!/bin/bash

for ID in $(xinput list | grep "Logitech Unifying Device" | perl -pe 's/^.*?id=(\d+).*$/\1/'); do
  xinput set-button-map $ID 1 2 3 4 5 6 7 8 9 2 11 12 13 14 15 16 17 18 19 20 2>/dev/null | true;
done