Coffee-Script Quick Start on Ubuntu Linux
How to Install and Getting Started with CoffeeScript Programming on Ubuntu 14.04 Trusty Tahr LTS i386/amd64 GNU+Linux desktop.
The CoffeeScript programs are Compiled and Translated into JavaScript, so finally they are pure JavaScript programs underneath.
The CoffeeScript compiled output is readable and pretty-printed, will work in every JavaScript runtime, and tends to run as fast or faster than the equivalent handwritten JavaScript.

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Open a Command Line Terminal Window
Ctrl+Alt+t on desktop
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
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How to Install Latest Node.js on Ubuntu Linux
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Installing CoffeeScript on Ubuntu.
npm install -g coffee-script
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Run the CoffeeScript REPL.
coffee
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Getting Started Learning CoffeeScript Programming