Finder: Show all files
With this command you will display all files including the ones the finder hides from you.
Type the following commands in the Terminal app prompt one at a time or you can copy and paste it.
defaults write com.apple.finder AppleShowAllFiles TRUE
killall Finder
Before Screenshot
After Screenshot
You can undo this process by entering the following commands one at a time or you can copy and paste it.
defaults write com.apple.finder AppleShowAllFiles FALSE
killall Finder