Nitrogen

Nitrogen is a program that allows you to set the desktop background. Its

browser mode allows you to choose and apply a desktop background, and the

recall mode lets you apply the saved configuration from the command line.

It features Multihead and Xinerama awareness, inotify monitoring of browse

directory, lazy loading of thumbnails to conserve memory, and an

'automatic' set mode which determines the best mode to set an image based

on its size.