figlet - Make large character ASCII banners out of ordinary text

shell> apt-get install figlet
shell> brew install figlet
shell> figlet helloworld

 _          _ _                         _     _
| |__   ___| | | _____      _____  _ __| | __| |
| '_ \ / _ \ | |/ _ \ \ /\ / / _ \| '__| |/ _` |
| | | |  __/ | | (_) \ V  V / (_) | |  | | (_| |
|_| |_|\___|_|_|\___/ \_/\_/ \___/|_|  |_|\__,_|