쉘 스크립트를 종료하는 방법은 무엇입니까?

이 시도:

read -p "Do you want to continue? (y/N) " ANS
    # if not, do something else, otherwise fall out the bottom
    [ "$ANS" = "y" -o "$ANS" = "Y" ] && {
            # commands here what to do if we stick around
            echo "OK, we will continue"
            # better put something else to do here or we'll fall out anyway.
            }