In OS X 10.7, the Library directory is hidden by default to prevent users from accidentally removing critical files. If you are an advanced user that needs access to the Library directory, it can easily be accomplished by using a simple Terminal command.
1. Launch Terminal.
2. Execute the following Terminal Command:
chflags nohidden ~/Library/
The Library folder will no longer be hidden. If you need to return back to having the Library directory in a hidden state, execute the following Terminal command:
chflags hidden ~/Library
