How to Install DrRacket in Ubuntu

In this article I will show you how to install DrRacket, a popular Scheme editor and compiler, on Ubuntu 12.04.
The generic steps are: add the PPA, update the system, install DrRacket.
DrRacket is a very  popular Development IDE, mostly used for Functional Programming.
Add the PPA:

$ sudo su

# echo "deb http://ppa.launchpad.net/plt/racket/ubuntu precise main" >> /etc/apt/sources.list

# echo "deb-src http://ppa.launchpad.net/plt/racket/ubuntu precise main" >> /etc/apt/sources.list

Update:

# apt-get update

Install DrRacket:

# apt-get install racket

Then goto dash home you will get a icon of DrRacket click it to open
you will get a window as shown below

Now, the firs step is to choose Language
Menu --> Language -->  Choose Language -->  Select the Racket Language --> click 'OK'

 
That's all friend's start scratching your head to learn Scheme.