【shell】case语句

case只能判断一种条件关系，而if能判断多种条件关系

#!/bin/bash

read -p "please input your choice (high/middle/low):" -t 30 choice

case $choice in

        "high")

                echo "your choice is $choice"

                ;;  ##千万别漏下

        "middle")

                echo "your choice is $choice"

                ;;

        "low")

                echo "your choice is $choice"

                ;;

        *)

                echo "error high/middle/low"

                ;;

esac ##千万别漏下