It should be no different from triggering a library scan from within Plex running on Windows.
You might experience that Linux has a more strict approach when it comes to file permissions which can get in the way if you’re e.g. not properly mounting your drive.
I’m not exactly sure what kind of problem you’re experiencing (e.g. no automatic scan vs. files not being recognized, files being ignored, bad naming, mismatches…).
The Linux Tips from the tips & tricks section are always a good starting point if you run into some general issue. The same goes for the basic naming schema.
