Show Hidden Files in Mac OS X
OS X 10.6 now has the ability to show and hide hidden files in Open and Save dialogs with a keystoke toggle:
If your decimal separator is a comma, you may have to use Command-Shift-, (comma).
This has been needed for quite some time. Shame it doesn’t work in Finder. Although, you can enable them in Finder system-wide. Open Terminal and type:
defaults write com.apple.Finder AppleShowAllFiles TRUE killall Finder
And back to normal, if it's not your bag, baby:
defaults write com.apple.Finder AppleShowAllFiles FALSE killall Finder
Filed under Mac