This question already has an answer here:
I'm using Linux Mint, with the TeX Live distro and Texmaker as my editor. Basically, I would like to be able to use
llncs.cls as a document class without having to always put that file in with the document I'm trying to compile. Under MikTeX (which I used back when I used Windows), there was a way to resolve it by giving it a place to search for packages etc. if it couldn't find them normally. However, I have no idea how to do this in Linux. Could someone help me out?