In OS X Lion, user libraries (~/Library) are hidden. If you want to make it visible, use chflags. To use chflags to hide a file, simply type chflags followed by hidden and then the folder. For example, let’s say you wanted to hide your ~/Library folder before you compiled a new copy of an operating system. Just run the following to hide it (or re-hide it once you provde you can unhide it): chflags hidden ~/Library And then let’s say you wanted to unhide it ’cause you realized that it’s one of those folders best left visible: chflags nohidden ~/Library You can also use the SetFile command (both are located…