Guess the number script

1. Guess the number game

• Get a random number in a specified range and store it in a variable
• Prompt the user to guess the number, guess the right one, and continue with the wrong guess until the right guess
• And set the number of guesses, and exit after the number is exhausted

2. The script content is written as follows

#!/bin/bash
num=$[$RANDOM%10+1]
time=5
while :
do
        echo "你还有$time次猜的机会"
        if [ $time -eq 0 ];then
                echo "猜的机会用完了,正在退出...."
                break
        fi
        read -ep "请输入猜的数字:"  guess_num
        if [ $guess_num -gt $num ];then
            echo "猜大了"
        elif [ $guess_num -lt $num ];then
            echo "猜小了"
        else
            echo "猜对了"
            break
        fi
        let time--
done

3. Add execution permissions to the script

chmod +x guess_num.sh

4. Execute script test

[root@host-137 ~]# sh guess_num.sh 
你还有5次猜的机会
请输入猜的数字:2
猜大了
你还有4次猜的机会
请输入猜的数字:5
猜大了
你还有3次猜的机会
请输入猜的数字:7
猜大了
你还有2次猜的机会
请输入猜的数字:9
猜大了
你还有1次猜的机会
请输入猜的数字:2
猜大了
你还有0次猜的机会
猜的机会用完了,正在退出....