I am trying to find res.cls! I've been looking for quite a while for res.cls but have not found it.
All signs point to it being in texlive-latex-extra, but as far as I can tell it wasn't provided.
I am in the midst of installing texlive-full just to see what happens, but nonetheless, I would like to know where or if this file is provided.
I know you can get it via CTAN which is where I'm going next if I can't get it from the Ubuntu packages.