Massive portupgrade without being interrupted by configuration screens?

[Lowell Gilbert]

Jerry <freebsd.user at seibercom.net> writes:

> On Sat, 2 Oct 2010 10:05:33 -0500
> Doug Poland <doug at polands.org> articulated:
>
>> If I understand the OPs question correctly, I believe setting the
>> environment variable BATCH=yes will give desired results with
>> portupgrade.  This will cause port compile defaults to be used in
>> lieu of an existing /var/db/ports/*/options file.
>
> I was of the opinion, and I could be wrong, that setting 'BATCH=yes'
> simply stopped the build process from attempting to create an options
> file; however, it would use an existing one if it was present. Perhaps
> someone with more intimate knowledge of this would care to comment. I
> say this because I have used the BATCH technique once I had all of my
> ports configured the way I wanted. Subsequent updates always appeared to
> use any existing configuration files.

In two minutes of looking at bsd.port.mk, 
I confirmed that this is correct.