Dê uma olhada no pacote apt-zip .
Update a non-networked computer using apt and removable media
These scripts simplify the process of using dselect and apt on a non-networked Debian box, using removable media like ZIP floppies and USB keys.
One generates a 'fetch' script (supporting backends such as wget and lftp, in a modular, extensible way) to be run on a host with better connectivity, check space constraints of your removable media, and then install the package on your Debian box.