There are instructions for both games on reddit and they even give tips for Linux. Important on Linux is that the directory is set to case insensitive. Otherwise you will have problems because files from several mods are duplicated.
Yeah I don't necessarily disagree with the idea of making file paths case sensitive (i.e. usr/Folder/ is a different directory than usr/folder and same for files), but it is definitely a big mind fuck coming from an operating system where things aren't really case sensitive in that way.