As we know we have to update software indexes (by apt-get update) before we begin installing software during fresh install. Is there any way to update the software indexes on the machine having no internet connection. Now plz plz don't suggest me the nonetdebs way, it is for downloading packages and dependencies. I want to just update software indexes.

In which files these indexes are stored when i apt-get update so that i can copy that file to the machine with no internet connection.

Any help ?