Here is how to find your Aperture library if you don't know where it is.

Launch Aperture and open the application preferences under the Aperture menu (or hit command comma). At the top of the window the current library location can be seen and changed:

The ~ character (tilde) means my home folder.

There is also a quick way to find all of your Aperture libraries on any or all of your disks. Open a Finder window -- any one will do. Then press command F. That turns the Finder window into a Find window (confusing but true):

Now select Computer or Home, or appropriate disks (via Others) using the buttons just below the toolbar. That will limit the search to whatever is chosen. Then delete the Last Opened entry by clicking the - button on the right end of the line. All you need for this is one line that starts with Kind, so if there are others, get rid of them too, and change the remaining one to Kind.

On the pop-up to the right of Kind, select Others... and type Library into the box. Instantly you will get a list of all the libraries:

This will find all sorts of libraries, not just Aperture libraries, but you can easily scroll through to find what you are looking for.

The TextWrangler and Preview icons are on my toolbar because I dragged the application icons there. It's a little-known feature that you can put almost anything in the toolbar and it will appear on all the Finder windows for easy access -- either for clicking or for dropping things onto. The only thing I don't recommend adding is servers and other volumes that may go off line. That can hang the Finder.

Tags: Aperture, Library