June 07, 2013, 11:10 AM — Here's how you can install the Darktable photography workflow application in Ubuntu 13.04.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:pmjdebruijn/darktable-release
sudo apt-get update
sudo apt-get install darktable exiv2
Source: Noobs Lab