Execute from a Terminal window: Show hidden files defaults write com.apple.finder AppleShowAllFiles YES killall Finder Hide hidden files defaults write com.apple.finder AppleShowAllFiles NO killall Finder
Software Without Jargon
Execute from a Terminal window: Show hidden files defaults write com.apple.finder AppleShowAllFiles YES killall Finder Hide hidden files defaults write com.apple.finder AppleShowAllFiles NO killall Finder