Snapper 

Snapper reads the directory of a disk which is then saved as a "snapshot", so that later you can compare it with a new snapshot of the disk and see what has changed. The results are easy to see with colour highlighting in an Explorer-style interface.
snapshot file files directory dir directories tree trees folder folders sub subdir subfolder

Submarines II Screen Saver 

Protect your monitor with photos of Navy Submarines. See 100 images of different Attack Submarines, Fleet Ballistic MissileSubmarines and Guided Missile Submarines.Over two dozen visual effects can appear between images.
uboot submarine submarines screen saver wallpaper uboat wolfpack