Show User ~/Library in OS X Lion
Launch Terminal from Spotlight or Launchpad > Utilities, and enter the following command to show the directory:
chflags nohidden ~/Library/
The users Library folder will immediately become visible. Reverting this back to the standard Lion setting is simple too:
Hide User ~/Library in OS X Lion (default setting)
This returns to the default setting of hiding the user Library directory:
chflags hidden ~/Library
Changes take effect immediately again, and Library becomes invisible to the user.