How to install kdiff3 on Ubuntu 12.04

Kdiff3 is a diff and merge tool.

Unfortunately it doesn't come listed on some of the software repositories for ubuntu.

To install kdiff3 on Ubuntu 12.04 and probably on any other versions you can follow these instructions:

1. Download the Kdiff3 tar file from the sourceforge repo (http://sourceforge.net/projects/kdiff3/), then extract the tar file:

   tar -xzf kdiff3-0.9.97.tar.gz

2. Install QT4 if you don't already have it:

   sudo apt-get
   

3. Change the directory to `kdiff3-0.9.97/src-QT4` and compile:

   cd kdiff3-0.9.97/src-QT4 qmake kdiff3.pro make sudo make install

Open Kdiff3 by typing it in the terminal: kdiff3