show your Library folder on OS X Lion

Previous versions of OS X did not hide your Library folder. Lion does.This causes a problem for instance when you want to copy keychains between your old and new mac, to name one example.
Launch terminal and write:
chflags nohidden ~/Library/
You will now see your Library folder when checking your user home folder.
nohidden will unhide and if you just replace nohidden with hidden the folder will be invisible again