This may be a trivial question. I am looking for an easy approach to upgrade my texlive distribution withouth performing a plain new installation (i.e. removing texlive 2014, dowwnloading and installing texlive 2016). I am running Ubuntu and have TL installed individually; not from the ubuntu repositories.
In a terminal I can only update packages in the repositories of the specific TL version. For newer updates with
tlmgr I have to istall a new version of TL.
My question: (How) can I use
tlmgr to upgrade my TL distribution? I am wondering if my understanding of TL versioning and repositories is correct and this is/is not possible?