# add the mongodb repository to /etc/apt/sources.list
sudo bash -c "echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' >> /etc/apt/sources.list"
 
# add 10gen's GPG key so that aptitude will trust the repository
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
 
# Update aptitude's list of available packages
sudo apt-get update
 
# Install mongodb <img src="http://nopolabs.com/wp-includes/images/smilies/icon_smile.gif " alt=":)" class="wp-smiley">
sudo apt-get install mongodb-10gen