☰

如何在 bash 中继续运行程序

tag-icon • tag-icon linux bash shell
如何在 bash 中继续运行程序

我在 Ubuntu 中编写了一个 bash 程序。该程序是“用计算机玩石头、剪刀、布”。我希望继续这个程序，直到出现“你赢了，再见”的消息。

有人可以建议我使用下面的代码来做到这一点吗？

#!/bin/bash

echo "Welcome to play Rock, Paper, Scissors"
echo "Choose Rock(0), Paper(1), Scissors(2)"

#read players choice
read PLAYER

choices=( 0 1 2 )

#randomize the computer choice
COMPUTER=${choices[$((RANDOM%3))]}

if [[ $PLAYER = 0 && $COMPUTER = 1 ]]
    then echo "i have paper , i win";
elif [[ $PLAYER = 1 && $COMPUTER = 1 ]]
    then echo "i have paper , we draw";
elif [[ $PLAYER = 2 && $COMPUTER = 1 ]]
    then echo "i have paper , you win, bye bye";
elif [[ $PLAYER = 0 && $COMPUTER = 0 ]]
    then echo "i have rock , we draw";
elif [[ $PLAYER = 1 && $COMPUTER = 0 ]]
    then echo "i have rock , you win, bye bye";
elif [[ $PLAYER = 2 && $COMPUTER = 0 ]]
    then echo "i have rock , i win";
elif [[ $PLAYER = 0 && $COMPUTER = 2 ]]
    then echo "i have scissors, you win, bye bye";
elif [[$count = 0 && $PLAYER = 1 && $COMPUTER = 2 ]]
    then echo "i have scissors, i win";
elif [[$count = 0 && $PLAYER = 2 && $COMPUTER = 2 ]]
    then echo "i have scissors, we draw "
fi

答案1

将整个 while 过程放入一个while true循环中，并break在每个想要结束的位置退出。

还要注意，不需要数组choices。

#!/bin/bash


echo "Welcome to play Rock, Paper, Scissors"

while true
do
       echo "Choose Rock(0), Paper(1), Scissors(2)"
       #read players choice
       read PLAYER

       #randomize the computer choice

       COMPUTER=$((RANDOM%3))

       if [[ $PLAYER = 0 && $COMPUTER = 1 ]]
           then echo "i have paper , i win";
       elif [[ $PLAYER = 1 && $COMPUTER = 1 ]]
           then echo "i have paper , we draw";
       elif [[ $PLAYER = 2 && $COMPUTER = 1 ]]
           then echo "i have paper , you win, bye bye"; break
       elif [[ $PLAYER = 0 && $COMPUTER = 0 ]]
           then echo "i have rock , we draw";
       elif [[ $PLAYER = 1 && $COMPUTER = 0 ]]
           then echo "i have rock , you win, bye bye"; break
       elif [[ $PLAYER = 2 && $COMPUTER = 0 ]]
           then echo "i have rock , i win";
       elif [[ $PLAYER = 0 && $COMPUTER = 2 ]]
           then echo "i have scissors, you win, bye bye"; break
       elif [[$count = 0 && $PLAYER = 1 && $COMPUTER = 2 ]]
           then echo "i have scissors, i win";
       elif [[$count = 0 && $PLAYER = 2 && $COMPUTER = 2 ]]
           then echo "i have scissors, we draw "
       fi
done

答案2

您可以简单地添加一个无限循环，使用while循环，并根据玩家输入退出程序。例如：

#!/usr/env bash

echo "Welcome to play Rock, Paper, Scissors"

choices=( 0 1 2 )

while [ "$PLAYER" != "Q" ]; do
    echo "Choose Rock(0), Paper(1), Scissors(2), or quit (Q)"
    read PLAYER

    #randomize the computer choice
    COMPUTER=${choices[$((RANDOM%3))]}

    if   [[ "$PLAYER" = "0" && "$COMPUTER" = "1" ]]
        then echo "i have paper , i win"
    elif [[ "$PLAYER" = "1" && "$COMPUTER" = "1" ]]
        then echo "i have paper , we draw"
    elif [[ "$PLAYER" = "2" && "$COMPUTER" = "1" ]]
        then echo "i have paper , you win, bye bye"
    elif [[ "$PLAYER" = "0" && "$COMPUTER" = "0" ]]
        then echo "i have rock , we draw"
    elif [[ "$PLAYER" = "1" && "$COMPUTER" = "0" ]]
        then echo "i have rock , you win, bye bye"
    elif [[ "$PLAYER" = "2" && "$COMPUTER" = "0" ]]
        then echo "i have rock , i win"
    elif [[ "$PLAYER" = "0" && "$COMPUTER" = "2" ]]
        then echo "i have scissors, you win, bye bye"
    elif [[ "$PLAYER" = "1" && "$COMPUTER" = "2" && "$count" = "0" ]]
        then echo "i have scissors, i win"
    elif [[ "$PLAYER" = "2" && "$COMPUTER" = "2" && "$count" = "0" ]]
        then echo "i have scissors, we draw "
    fi
done

相关内容