Install Node.js on Ubuntu 12.04

sudo apt-get update
sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

DO NOT INSTALL NODE:  sudo apt-get install node

running this 'node' in terminal will result in:  axconfig: port 1 not active 

node package in ubuntu = Amateur Packet Radio Node program:  accepts & connects to radio frequencies / protocols

Remove Amateur Node & install Node.js:

1. sudo apt-get remove --purge node
2. sudo apt-get clean
3. Install Nodejs using steps above

References: GitHub, Node=!Nodejs, Amateur Node