这两天在折腾服务器，突然发现了一个很有趣的菜单，内容来源自维基百科中文版。为什么强调是中文版？因为英文版没有介绍这些彩蛋，Why so serious?

如果你的环境中有apt，你可以试一下执行命令apt moo，结果如下：

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gitpod /workspace/yuque $ apt moo
                 (__)
                 (oo)
           /------\/
          / |    ||
         *  /\---/\
            ~~   ~~
..."Have you mooed today?"...

而在aptitude中，如果输入aptitude moo等一系列命令，则会是一波梦幻联动：

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gitpod /workspace/yuque $ aptitude moo
There are no Easter Eggs in this program.
gitpod /workspace/yuque $ aptitude -v  moo
There really are no Easter Eggs in this program.
gitpod /workspace/yuque $ aptitude -vv  moo
Didn't I already tell you that there are no Easter Eggs in this program?
gitpod /workspace/yuque $ aptitude -vvv  moo
Stop it!
gitpod /workspace/yuque $ aptitude -vvvv  moo
Okay, okay, if I give you an Easter Egg, will you go away?
gitpod /workspace/yuque $ aptitude -vvvvv  moo
All right, you win.

                               /----\
                       -------/      \
                      /               \
                     /                |
   -----------------/                  --------\
   ----------------------------------------------
gitpod /workspace/yuque $ aptitude -vvvvvv  moo
What is it?  It's an elephant being eaten by a snake, of course.
gitpod /workspace/yuque $ aptitude -vvvvvvv  moo
What is it?  It's an elephant being eaten by a snake, of course.

甚至还用了小王子的梗，开发者们真的是太可爱了。

而在另一个软件apt-build中，也存在这个cow，当我们运行apt-build moo之后，就会出现一只跳舞的牛，甚至用了“Discow”的谐音梗来表达跳舞的牛，真是脑洞大开。

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gitpod /workspace/yuque $ apt-build moo
         (__)    ~
         (oo)   /
     _____\/___/
    /  /\ / /
   ~  /  * /
     / ___/
*----/\
    /  \
   /   /
  ~    ~
..."Have you danced today? Discow!"...