shell腳本實現猜數字小遊戲

創建腳本

# vim /root/caishuzi.sh

編寫腳本

#/bin/bash
sj_num=$(echo `expr $RANDOM % 100`)
count=0
while :
do
        read -p "請輸入一個隨機數：" num
        let count++
        echo "你輸入的隨機數是：$num"
        if [ $num -gt ${sj_num} ];then
                echo "你猜大了"
        elif [ $num -lt ${sj_num} ];then
                echo "你猜小了"
        else
                echo "恭喜你！你猜對了"
                echo "你總共猜了$count次"
                break
        fi
done

運行腳本

# sh /root/caishuzi.sh