Source: I copied this article verbatim from http://www.unixmen.com/linux-distributions/4-ubuntu/1069-ppasearch-a-tool-that-search-and-add-ppa-repository-in-ubuntu-via-command-line
I am only keeping it as a personal backup here in case it moves. All credit goes to them for presenting this great tool.
PPASEARCH is a nice tool that search launchpad PPAs via command line and add them to Ubuntu repositories, it is available for Ubuntu 10.04 Lucid Lynx and Ubuntu 10.10 Maverick Meerkat.
The use of PPAsearch is easy, just open terminal and type ppasearch
Ubuntu 10.04 Lucid Lynx and Ubuntu 10.10 Maverick Meerkat
Open terminal and enter the following commands:
sudo add-apt-repository ppa:wrinkliez/ppasearch
sudo apt-get update && sudo apt-get install ppasearch
For example i want to search for deluge ppa, open terminal and type:
You will got a list of PPAs that contain the package deluge, choose one by typing the number and confirm.