shell实现菜单选择

output="Is today your birthay: "

echo  -e "\n"

select	menu_selections in Yes No Quit
do
case $menu_selections in
Yes) echo -e "\nHappy Birthday!\n"
;;
No)  echo -e "\nIt is someone's birthaday today...sorry it is not yours\n"
;;
Quit)echo -e "\nLater tater!\n"
break
;;
*)   echo -e "\nInvalid Answer...Please try again\n"
;;

esac
done