cp main.tf main_$number.tf
sed -i "s/debian_13_test/debian_$number/g" main_$number.tf && sed -i "s/user_config/user_config_$number/g" main_$number.tf && sed -i "s/vendor_config/vendor_config_$number/g" main_$number.tf && sed -i "s/debian_13/debian_$number/g" main_$number.tf