Unfortunately, while DXF is decently well supported under desktop Linux, to my knowledge, there is no currently-maintained Linux program to directly view or edit DWG. There is a reason for that, but I can't recall it off the top of my head. I ran into that issue when I downloaded the plans for my university, and ended up running a shareware converter in Wine, which was rather painful with that volume of files. If you can prove me wrong, I'd be happy, but I don't think you'll have much luck. Would it be practical for you to convert them once to, say, vector PDF, or is this an ongoing thing?