My goal is to use Google Music Manager on a Linux server. I'm wondering if the music manager can operate from the command line and with no GUI. If I could set the software up to watch a particular directory on the server and upload from there, that would be the only necessary functionality. Thank you.
Take a look at these to scripts:
Hope they are useful. Read comments. Remember to edit:
This is a duplicate of "uploading music automatically with Google Music on a Linux server". To quote the answer I've just provided there...
I think what you appear to be looking for is https://github.com/thebigmunch/gmusicapi-scripts - a set of python scripts to upload, download or bi-directionally sync tracks. This, in turn, draws from https://github.com/simon-weber/Unofficial-Google-Music-API should you wish to use these python libraries for your own projects.