【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