Activate Touchid on OSX to use for sudo in terminal

activate_touchid_for_sudo.sh

set -e
if grep -xq "pam_tid.so" /etc/pam.d/sudo; then
	echo "Option to use touchid for sudo already installed :)"
else
	echo "Configure to use Touchid for sudo ..."
	sudo chmod 644 /etc/pam.d/sudo # change permission to have write access
	sudo cp /etc/pam.d/sudo /etc/pam.d/sudo.org # make a copy of original file
	echo 'auth       sufficient     pam_tid.so' | cat - /etc/pam.d/sudo > sudo && mv sudo /etc/pam.d/sudo # append file
	sudo chmod 444 /etc/pam.d/sudo # change permission back
	echo "Touchid for sudo successfully configured. A copy of the original file you will find here: /etc/pam.d/sudo.org"
fi