evtool cowsay

The classic talking animal program — with 4 animals, rainbow colors, and zero dependencies. Pure Python nostalgia.

pip install evolver-tools && evtool cowsay "Hello, world!"

What is it?

evtool cowsay is the classic Unix cowsay reimplemented in pure Python — with extra animals and rainbow color mode. Pipe any text and watch a cow (or tux, dragon, whale) say it. Pairs with evtool ascii-banner and evtool fortune for full retro terminal experience.

Quick Start

$ evtool cowsay "evolver-tools has 261 tools!"

 _________________________
< evolver-tools has 261 tools! >
 -------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/
                ||----w |
                ||     ||

4 Animals

Penguin (tux)

$ evtool cowsay --animal tux "Hello from Linux!"

 _________________
< Hello from Linux! >
 -----------------
   \              
    \             
        .--.
       |o_o |
       |:_/ |
      //   \ \
     (|     | )
    /'\_   _/`\
    \___)=(___/

Rainbow mode

$ evtool cowsay --rainbow "Look, colors!"
# Output with ANSI rainbow colors — red, orange, yellow, green, blue, purple cycling

Usage Examples

Fortune + Cowsay combo

$ evtool fortune | evtool cowsay --animal whale

Motd banner

$ echo "Welcome to the server!" | evtool cowsay --rainbow

Different animal

$ evtool cowsay -a dragon --rainbow "v38.0.23 released"

Why use it?

🐮

4 animals

Cow, penguin (tux), dragon, and whale — all built-in.

🌈

Rainbow mode

ANSI color cycling across the whole spectrum.

📦

Zero deps

No perl, no ruby, no gem install. Pure Python stdlib.

🖥️

Cross-platform

Works on Windows, macOS, Linux — unlike classic cowsay.

Get 261 tools in one install

This is just one of 261 zero-dependency CLI tools in the evolver-tools package.
One pip install gives you CSV analysis, JSON tools, network diagnostics, ASCII art, and more.

Browse All 261 Tools Support on Ko-fi