Shortcut to update WC without path?

[Tom N]

I'm looking for a shortcut to update the entire SVN WC without specifying the 
(relative or absolute) path to the root of the WC, assuming the PWD is in the 
WC.
I was hoping "svn up ^" would work but doesn't seem to (at least not as of 
1.9.7.  I know I can make this work with "svn info" and some scripting, is 
there a built-in way?

Thanks!