Installing Node.js, NPM and Karma on Ubuntu 11.10

I've seen many receipes for how to install Node.js and Karma on Ubuntu 11.10, but none as  simple as this.

Download latest Node.js from http://nodejs.org/. Unzip the .tar.gz file into some directory (from here called nodeJsDir).

Open a terminal and type in the following commands:

cd nodeJsDir
./configure
make
sudo make install

There after simple install karma by executing the command

sudo npm install -g karma

Karma can now be started executing

karma start