26、趣味Shell脚本游戏：从州首府问答到纸牌游戏

趣味Shell脚本游戏：从州首府问答到纸牌游戏

1. 州首府问答游戏

1.1 游戏介绍

州首府问答游戏是一个简单而有趣的脚本，它会随机选择美国50个州中的一个，让玩家猜测该州的首府。玩家可以通过输入首府名称来进行回答，如果回答正确，会得到相应的提示；如果回答错误，脚本会告知玩家正确答案。

1.2 代码实现

#!/bin/bash
# states--A state capital guessing game. Requires the state capitals
#   data file state.capitals.txt.
db="/usr/lib/games/state.capitals.txt"     # Format is State[tab]City.
if [ ! -r "$db" ] ; then
  echo "$0: Can't open $db for reading." >&2
  echo "(get state.capitals.txt" >&2
  echo "save the file as $db and you're ready to play!)" >&2
  exit 1
fi
guesses=0; correct=0; total=0
while [ "$guess" != "quit" ] ; do

  thiskey="$(randomquote $db)"

  # $thiskey is the selected line. Now let's grab state and city info,