Is there a way to sync my laptop's Ubuntu install with a jumpdrive Ubuntu install?

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http://askubuntu.com – So I'm doing a fresh install of Ubuntu on my laptop right now. I also have a jumpdrive with Ubuntu installed on it with a persistent setup. What I would like is to be able to plug the jumpdrive into my laptop and have the installs sync certain data. I don't want docs and such to sync of course, but I would like some software to sync with installs and updates, mostly security and recovery stuff. Here's an example of what I would like to happen: I already have TestDisk installed on my jumpdrive but I haven't booted the drive in a while. I plug it in to my laptop where TestDisk has been updated (HowTos)