> updates only the files that have changed No linux system that I ever used worked that way. The only system I've seen that did that was solaris, and that pat

> updates only the files that have changed No linux system that I ever used worked that way. The only system I've seen that did that was solaris, and that patching software was a disaster. Systems like dpkg and rpm replace the entire contents of a package when there is an update. The benefit of this is that if things are very out of date or a package is corrupted, the only thing you need to do to get things up to date is (re)install the latest package. Packages on linux are fairly granular, so in practice doing full individual package updates is not a huge problem. I have 2300 packages or so installed on my laptop and all but 100 or so are under 10M. Google did a lot of work optimizing chrome package updates, but I'm not sure if most distributions are prioritizing this sort of thing anymore.