apt will automatically check the contents of /var/cache/apt/archives for
files that have already been downloaded, and will not re-fetch them if
they match and are located in the pkgcache.bin file.
Re-running the same apt-get commandline will thus not refetch any data
that it does not need to - it even resumes interrupted files.
Yes, but that's not what I'm after as I don't want to download the
remaining packges from the "upgrade" as it would take forever. I just want
to be able to install the already downloaded packges (resolving any
dependencies) and leave the remainder for the next time I've got access to
broadband. I was hoping apt-get -f install would do it, but it wasn't to be