I haven't had much time to do much Lilypond work on my new-ish Ubuntu setup. I'd like some advice on where to put a generic "definitions.ly" file that I want to include in most of my pieces. I'm afraid that if I put the definitions.ly in my Lilypond program directory, it will be eliminated or overwritten when I upgrade. Any advice? If I put it in in a directory above my working directory (I have more than one working directory), how and where do I specify the path in Lilypond?