aptitude -v… moo
イースターエッグとかマジねーから
$ aptitude -v moo
There really are no Easter Eggs in this program.
ないっつったよな？
$ aptitude -vv moo
Didn't I already tell you that there are no Easter Eggs in this program?
おいやめ
$ aptitude -vvv moo
Stop it!
はいはい。イースターエッグが欲しいなら、他をあたりな？
$ aptitude -vvvv moo
Okay, okay, if I give you an Easter Egg, will you go away?
そうだな、お前の勝ちだ
$ aptitude -vvvvv moo
All right, you win.
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/ \
/ |
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これは何って？ 蛇に飲み込まれた象だよ、わかるだろ
$ aptitude -vvvvvv moo
What is it? It's an elephant being eaten by a snake, of course.
わかるだろ
$ aptitude -vvvvvvv moo
What is it? It's an elephant being eaten by a snake, of course.
わかるだろ
$ aptitude -vvvvvvvv moo
What is it? It's an elephant being eaten by a snake, of course.
関連（？）
(via http://neonboy619.blogspot.jp/2010/02/little-prince-1974-lerner-and-lowe.html)
「星の王子さま」に出てくるやつが元ネタみたいです。