I would continue explaining more about Node.js, but for all those folks who do things and understand them, here’s the way to install Node.js on Ubuntu machines..

You need to first install necessary packages like git-core and libssl-dev

sudo apt-get update
sudo apt-get install g++ curl libssl-dev apache2-utils
sudo apt-get install git-core

Download the latest source and build it

wget http://nodejs.org/dist/v0.8.2/node-v0.8.2.tar.gz
gunzip node-v0.8.2.tar.gz
tar xvf node-v0.8.2.tar.gz
cd node-v0.8.2
sudo make install

Check the version after install

node -v