Symbolic links made simple

Symbolic links are similar to aliases, in the sense that they are shortcuts that link to a specific file or folder. But symbolic links are often more useful than aliases: For example, if you put an alias in your Dropbox folder, it will sync just the alias file; put a sym link in that folder, and Dropbox will sync the original file that link points to. And aliases won't work in OS X's Unix-based tools, including Terminal; sym links will.