I got instructions from here, and I found several sites with similar instructions but somethig is wrong with the repositories on 12.04. This should work for 11.10 and previous versions.
Any ideas how to install backtrack repos and some back track apps on 12.04?
I read about downloading the .deb package for gerix and manually making the same folder structure that gerix uses on backtrack, then manually run the python script, but this way didn't work for me either.
How can I get gerix installed and working on my Ubuntu 12.04 system?
Best Answer
Open the terminal under Ubuntu 12.10/12.04/11.10 or older and run the following commands to add the BackTrack repository:
To check if the repository is added correctly, you can try to install this BackTrack package:
Or you can search BackTrack applications from Ubuntu Software Center.
Last step is install Gerix:
Don't forget run gerix as root.
Have fun using Gerix.
I tested this steps with success on 12.04 64bit.
Source: How To Add The BackTrack Repository To Ubuntu 12.10/12.04/11.10