yes/no code example

Example 1: yes/no

read -n 1 -p "Is this a good question (y/n)? " answer

Example 2: yes/no

read -p "Is this a good question (y/n)? " answer
case ${answer:0:1} in
    y|Y )
        echo Yes
    ;;
    * )
        echo No
    ;;
esac