#!/bin/zsh
getid()
{
xinput list | grep -m 1 "$1" | sed 's/.*=\([^\t]*\).*/\1/'
}
MOUSEID1=$(getid "TPPS/2 IBM TrackPoint")
if [ -z "$(xinput list | grep '2ndMouse')" ]; then
xinput create-master 2ndMouse
SECOND=$(getid 2ndMouse)
xinput reattach $MOUSEID1 $SECOND
else
FIRST=$(getid "Virtual core pointer")
SECOND=$(getid 2ndMouse)
xinput reattach $MOUSEID1 $FIRST
xinput remove-master $SECOND
fi