Copy full path of an open file I have a file open in Preview.app. I can easily view the full path for the same by  ⌘  + clicking on the file proxy icon (the icon shown besides the filename in Preview's title bar).

How do I copy the full path to clipboard?
Command+O  this opens a dialogue with the current file.
Select the file, and press Command+R, this reveals the file in Finder.
In Finder, select the file, and press Option+Command+C, this copies the full path to the Clipboard.