Install QGIS 2.0 on Ubuntu

Today QGIS 2.0 was officially released and we will come up with several tutorials in the next weeks. First of all: the installation.
As we are fans of open source we would like to show you the installation on a fresh build Ubuntu system:

Installation on Ubuntu

sudo apt-get install grass

As QGIS 2.0 is not part of the official Ubuntu repositories (aka software provider) we need to enhance the list of software providers. Open up the terminal and edit the sources.list which helds this list:

sudo gedit /etc/apt/sources.list

Now the standard editor of Ubuntu open up and you should add the following lines at the end of the file:

deb     http://qgis.org/debian precise main
deb-src http://qgis.org/debian precise main

If you are running Ubuntu in a different/older version change precise according to your needs. The official support has only precise pangolin aka 12.04 as the latest release. Save and close the file.
The download page of QGIS states that you should add the keys via the terminal. The key has changed and is not longer the one mentioned at qgis.org:
Open up terminal and type

gpg --keyserver keyserver.ubuntu.com --recv 47765B75
gpg --export --armor 47765B75 | sudo apt-key add -

Next of it we need to install one more software provider:

sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable

To update your local catalog of available software use the heavy line

sudo apt-get update

And in the end we are ready to go to install QGIS 2.0 Dufour

sudo apt-get install qgis python-qgis qgis-plugin-grass

This now takes a while but it will install QGIS on your Ubuntu system. In the end try to start QGIS. If it fails it is possible that you need to make yourself the owner of the qgis folder:

sudo chown -R "your username" ~/.qgis2

And here the video for it:

Have fun and enjoy your QGIS!