If you have been looking for a way to make the font in the sidebar of OSX Finder and Mail small and have been looking for a way to make that happen, here’s the easily overlooked setting in Preferences – General.
Make it happen!
There are four ways to hide a file in Mac OS X Finder.
1. It hides files that begin with .Fix: rename the file
2. If there is a .hidden file in a directory, it hides all the files in that directory that are listed in .hidden Fix: remove the file’s name from .hidden 3. It has the hidden flag set. Solution: (in the terminal) chflags nohidden /Path/to/file |
Reference from http://forums.macrumors.com/showthread.php?t=597097