井字棋shell脚本

井字棋是一种经典的游戏，可以通过编写Shell脚本来实现。下面是一个简单的井字棋Shell脚本的示例：

#!/bin/bash

# 初始化棋盘
board=(" " " " " " " " " " " " " " " " " ")

# 游戏结束标志
game_over=false

# 当前玩家
current_player="X"

# 打印棋盘
print_board() {
    echo " ${board[0]} | ${board[1]} | ${board[2]} "
    echo "--+--+--"
    echo " ${board[3]} | ${board[4]} | ${board[5]} "
    echo "--+--+--"
    echo " ${board[6]} | ${board[7]} | ${board[8]} "
}

# 判断游戏是否结束
check_game_over() {
    # 判断是否有玩家获胜
    if [[ ${board[0]} == $1 && ${board[1]} == $1 && ${board[2]} == $1 ]] ||
       [[ ${board[3]} == $1 && ${board[4]} == $1 && ${board[5]} == $1 ]] ||
       [[ ${board[6]} == $1 && ${board[7]} == $1 && ${board[8]} == $1 ]] ||
       [[ ${board[0]} == $1 && ${board[3]} == $1 && ${board[6]} == $1 ]] ||
       [[ ${board[1]} == $1 && ${board[4]} == $1 && ${board[7]} == $1 ]] ||
       [[ ${board[2]} == $1 && ${board[5]} == $1 && ${board[8]} == $1 ]] ||
       [[ ${board[0]} == $1 && ${board[4]} == $1 && ${board[8]} == $1 ]] ||
       [[ ${board[2]} == $1 && ${board[4]} == $1 && ${board[6]} == $1 ]]; then
        echo "Player $1 wins!"
        game_over=true
    fi

    # 判断是否平局
    if [[ ! " ${board[@]} " =~ " " ]]; then
        echo "It's a draw!"
        game_over=true
    fi
}

# 主循环
while [ "$game_over" = false ]; do
    clear
    print_board

    # 获取玩家输入
    read -p "Player $current_player's turn. Enter a number (1-9): " position

    # 检查输入的合法性
    if [[ ! $position =~ ^[1-9]$ ]]; then
        echo "Invalid input. Please enter a number from 1 to 9."
        continue
    fi

    # 检查位置是否已经被占据
    if [[ ${board[$position-1]} != " " ]]; then
        echo "Position already occupied. Please choose another position."
        continue
    fi

    # 更新棋盘
    board[$position-1]=$current_player

    # 检查游戏是否结束
    check_game_over $current_player

    # 切换玩家
    if [ "$current_player" = "X" ]; then
        current_player="O"
    else
        current_player="X"
    fi
done

print_board

这个脚本实现了一个简单的井字棋游戏。玩家可以通过输入数字来选择棋盘上的位置，脚本会根据玩家的选择更新棋盘，并判断游戏是否结束。如果有玩家获胜或者平局，游戏将结束并显示结果。