Hello Linux Geeksters. As you may know, Catfish is a lightweight and fast searching tool, written in Python. It has an minimalistic and intuitive GTK+3 inteface, it uses locate for performing searches of files and contents of files. The latest version available is Catfish 0.6.3.In this article I will show you how to install Catfish 0.6.3 on Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 15 Olivia, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0.2 Luna.

Because it is available via PPA, installing Catfish 0.6.3 on Ubuntu and Linux Mint is easy. All you have to do is:
Add the PPA:
$ sudo add-apt-repository ppa:catfish-search/catfish-stable
Update the repo:
$ sudo apt-get update
Install Catfish 0.6.3:
$ sudo apt-get install catfish