Catsay 
Cats in your $SHELL. Pairs well with lolcat.
$ catsay --cat octocat "Fork me on GitHub!"
MMM. .MMM
MMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMM Fork me on GitHub!
MMMM::- -:::::::- -::MMMM |/
MM~:~ ~:::::~ ~:~MM
.. MMMMM::. .:::+:::. .::MMMMM ..
.MM::::: ._. :::::MM.
MMMM;:::::;MMMM
-MM MMMMMMM
^ M+ MMMMMMMMM
MMMMMMM MM MM MM
MM MM MM MM
MM MM MM MM
.~~MM~MM~MM~MM~~.
~~~~MM:~MM~~~MM~:MM~~~~
~~~~~~==~==~~~==~==~~~~~~
~~~~~~==~==~==~==~~~~~~
:~==~==~==~==~~
Installation
gem install catsay
Usage
usage: catsay ...
-c, --cat [TEMPLATE] Chooses the cat.
-o, --out [OUTFILE] Output file (default=/dev/stdout)
-i, --in [INFILE] Input file (default=/dev/stdin)
-l, --list List cats and exit
-e, --verbose Annoying kitty
Contributing
This gem needs more cats! To add a cat, create an erb file in the cats/
directory. This file is just a text file. Add your cat and include the special
string <%= @message %> wherever you want the message to go. Then send me a
pull-request.