On Oct 17, 2011, at 3:07 AM, Michael Albinus wrote:

Marius Hofert <marius.hofert@math.ethz.ch> writes:

If you edit file /a/b/c and you cannot save it because it is owned by
root, you could save it by "C-x C-w /sudo::/a/b/c".

Now there's a clever man... I would have saved it off, opened it with sudo,
and pasted the changes in.  I'd never thought to just save the changes
via sudo.