I have an problem that I can probably solve by using procmail to save an
Email attachment to disk, run a program to act upon that attachment, and
then Email the resulting output (probably also as an attachment) back to
the sender of the message.

Do any of you know of any books or web pages (or man pages) that talk
about how to do that?

I've seen mention of being able to do such a thing, but I haven't seen
much clear information on how to actually do it.

Most of what I've found so far on procmail has been about using it to
filter Email, do a vacation reply, or rebroadcast to a distribution
list, which isn't quite the same thing.

Thanks for the ideas!

--

(Preferably reply to the newsgroup, please. If you reply by Email, I
will sincerely try to receive your message, but it will probably get
buried in spam.)