复活节彩蛋狂欢 - Shell-Bash

在这个充满欢乐和彩蛋的复活节里，Programmers也可以给自己带点欢乐！使用Shell-Bash，我们可以编写一些小程序来让我们的终端也参与这个狂欢节！

Easter Egg

先来了解一下什么是彩蛋(Easter Egg)：在软件或者网站应用中隐藏的一些有趣的功能或者消息，只有在用户特定的动作触发时才会展示出来。

对于Programmers来说，Easter Egg在娱乐和增强工作效率之间达到了完美的平衡，让我们来了解一下如何实现一个彩蛋。

代码实现

#!/bin/bash

cat << "EOF"

^
|         __..---..__
|     .-\"`          `\"-.
|   .'                  '.
|  /                      \\
| ;                        ;
| \\                        /
|  \\                      /
|   `._                _.'
|      `\"\"--......--\"\"`

EOF

Markdown格式的代码片段：

```bash
#!/bin/bash

cat << "EOF"

^
|         __..---..__
|     .-\"`          `\"-.
|   .'                  '.
|  /                      \\
| ;                        ;
| \\                        /
|  \\                      /
|   `._                _.'
|      `\"\"--......--\"\"`

EOF

运行这段代码后，命令行窗口将会显示一个小兔子。在这段代码中，使用了`cat << "EOF"`命令，将EOF中间的内容原样输出。

### 截图

![Easter Egg][egg]

[egg]: https://i.postimg.cc/SKMGcstf/easter-egg.png

## Egg Hunt

另外一个在复活节狂欢中很流行的活动就是Egg Hunt了。在这个活动中，我们可以模拟这个寻找彩蛋的过程。

### 代码实现

```bash
#!/bin/bash

echo -e "\nWelcome to the Easter Egg Hunt!\n"
echo "In this hunt, you have to find the hidden egg in the following directories:"
echo "./dir1"
echo "./dir2"
echo "You have 10 seconds to find the egg!"

egg_found=false
{
  sleep 10
  echo -e "\nOoops, time is up! You failed to find the egg."
} &

dir1_egg="./dir1/egg.txt"
dir2_egg="./dir2/egg.txt"

if [ -f "$dir1_egg" ]; then
  echo -e "\nCongratulation! You found the egg in $dir1_egg!"
  egg_found=true
fi

if [ -f "$dir2_egg" ]; then
  echo -e "\nCongratulation! You found the egg in $dir2_egg!"
  egg_found=true
fi

if [ "$egg_found" = false ]; then
  echo -e "\nOoops, you didn't find the egg in both directories!"
else
  echo -e "\nEnd of the hunt!"
fi

Markdown格式的代码片段：

```bash
#!/bin/bash

echo -e "\nWelcome to the Easter Egg Hunt!\n"
echo "In this hunt, you have to find the hidden egg in the following directories:"
echo "./dir1"
echo "./dir2"
echo "You have 10 seconds to find the egg!"

egg_found=false
{
  sleep 10
  echo -e "\nOoops, time is up! You failed to find the egg."
} &

dir1_egg="./dir1/egg.txt"
dir2_egg="./dir2/egg.txt"

if [ -f "$dir1_egg" ]; then
  echo -e "\nCongratulation! You found the egg in $dir1_egg!"
  egg_found=true
fi

if [ -f "$dir2_egg" ]; then
  echo -e "\nCongratulation! You found the egg in $dir2_egg!"
  egg_found=true
fi

if [ "$egg_found" = false ]; then
  echo -e "\nOoops, you didn't find the egg in both directories!"
else
  echo -e "\nEnd of the hunt!"
fi

运行这段代码后，程序将会模拟一个寻找彩蛋的小游戏。程序将在两个文件夹中随机放置一个彩蛋，你需要在10秒内找到它。如果你没有在时间内找到，程序将会告诉你这次寻找没有成功。如果你成功找到，程序将会告诉你这个彩蛋的位置。

### 截图

![Egg Hunt][hunt]

[hunt]: https://i.postimg.cc/7PG2rZZF/egg-hunt.png

## 结论

在复活节这个欢乐的节日里，为什么不为自己的终端节日增添一些欢乐呢？通过Shell-Bash，让自己的终端也变得有趣起来吧！