Bash

while [[ ! $RELATIVE_PATH_CHECKED =~ ^[Yy]$ ]]
do
    read -p "Is the relative path to the dev folder '${RELATIVE_PATH}' correct? [y/n] " -n 1 -r RELATIVE_PATH_CHECKED
    echo ""

    if [[ $RELATIVE_PATH_CHECKED =~ ^[Nn]$ ]]
    then
        read -p "Type in the correct path: " -r RELATIVE_PATH
    fi
done