nitrogen: nitrogen - Background manager for X windows
nitrogen: 
nitrogen: Nitrogen is a background browser and setter for X windows. It is
nitrogen: written in C++ using the gtkmm toolkit. It can be used in two modes:
nitrogen: browser and recall. Nitrogen has been in development for over 2 years,
nitrogen: due to real life and laziness.
nitrogen: The proper way to start Nitrogen is from a terminal, with the command:
nitrogen: 'nitrogen DIRECTORY', where DIRECTORY is the folder where your images
nitrogen: are located. Nitrogen will scan this directory recursively for images.
nitrogen: 
nitrogen: