shell 案例猜数字

[root@master ~]# cat guess.sh
#!/bin/bash
 
prive=$(expr $RANDOM % 1000)
echo $prive
count=1
while true
do
    read -p "请输入一个1-1000的随机数：" num
    if [ $num -gt $prive ]; then
        echo "大了"
    elif [ $num -lt $prive ]; then
        echo "小了"
    else
        echo "两个数相等"
        echo $count
        exit 0
    fi
    let count++
done

　　结构