Map Of The Linux File System
One of the difficulties of switching from one OS to the other is trying to locate all the system files and keep track of where the new OS stores all its settings.
The image above, is a complete Linux File System map that’s quite helpful for newbies like myself. I’m not sure what specific distribution this layout is from and, depending on the system you’re using, your actual structure may vary, with directories left out or additional ones present, but the basic outline should be the same.
From: http://blog.wired.com/monkeybites/2007/09/newbie-help-map.html