scan to pdf

[Troy Piggins]

I have xsane working fine, but it only gives options to save to
tiff, jpeg, and ps etc.  I mostly scan to pdf format these days.  I
ended up having to use gimp on a windows machine to print a jpeg
image to a pdf creater print driver.

What is the best way to save (scan directly to) pdf format in linux?
In addition if there are multiple pages how to append them to the
same pdf file?

-- 
Troy Piggins
Ubuntu v5.10 (Breezy Badger)