MOO(1)

📦 version 1.053, in alpine 3.24

🐄 MOO(1) — the moo manual page, bestie edition 💅

okay so this is moo, a User Contributed Perl thing, and honestly? it's giving iconic little guessing game energy. sit down, grab a strawberry 🍓, and let me tell you everything.

✨ NAME ✨

moo — play a game of MOO 🎀

✨ SYNOPSIS ✨

moo [size]

that's it. that's the whole vibe check. 🦋

✨ DESCRIPTION ✨

okay bestie, so moo is a game where you guess a random number that the computer picked. very main character of you, very mysterious of it.

by default, the computer takes a number of four distinct digits (and yes, 0's are included, don't do zeros dirty like that 🙈). but you can absolutely change that — just give moo the number of digits to take. slay, customize your difficulty.

after each guess, it hits you with the number of bulls and cows. and no, this is not a farm, let me explain:

  • a bull is a correctly guessed digit that's in the right place 🎯
  • a cow is a correct digit that's not in the right place 🐄

the way that bull/cow pipeline works is genuinely so satisfying, iykyk.

once a game finishes — meaning you guessed all the digits correctly, periodt 👑 — a new game starts automatically. no menu, no "play again?" prompt, it just goes. technically effortless.

want out? totally valid. you can exit the program by:

  • typing 'q' or 'Q' on a guess 🫶
  • or hitting the interrupt key (usually Ctrl+C) 💀

✨ OPTIONS ✨

okay so there's literally only one option and it's optional (lol, the duality):

  • size — the number of digits to use for the number to guess. that's the whole options menu, bestie, we're not doing a 40-flag situation here 🌸

✨ ENVIRONMENT ✨

the working of moo is not influenced by any environment variables. none. zero. it does not care about your $HOME, it does not care about your $PATH vibes, it is unbothered and thriving. 😌

✨ BUGS ✨

moo does not have any known bugs. ✨ not one. flawless. no cap. (we love a bug-free icon 🔥)

✨ AUTHOR ✨

the Perl implementation of moo was written by Abigail, perlpowertools@abigail.be. give her her flowers 💐👑

this program is copyright by Abigail 1999.

this program is free and open software. you may use, copy, modify, distribute and sell this program (and any modified variants) in any way you wish, provided you do not restrict others to do the same. like, share the love, don't gatekeep, that's the rule 🫶

genuinely the whole license is just "do whatever, but keep it open for everyone else." iconic behaviour, honestly.

and that's the page, bestie!! 💖 this was moo from the perl v5.42.2 docs, dated 2026-02-15 — go guess some digits, get those bulls, and remember: stay curious, stay cunty, stay open source 🦋🎀💜

📦 where this page comes from