Update Mac Software script (super quicker than app store)

update-mac.sh

#!/usr/bin/env bash

softwareupdate -l

while true; do
    echo "Do you wish to update all the above things?"
    read -p "[y/n]? " yn
    case $yn in
        [Yy]* ) softwareupdate -i -a; break;;
        [Nn]* ) exit;;
        * ) echo "Please answer yes or no.";;
    esac
done