songit is an utility designed to shorten the backup times of large music libraries by taking advantage of git
and exiftool
.
the usage is quite simple, just:
./songit.sh /path/to/music/library /path/to/backup/folder
the program will handle the rest.
by adding the music's metadata, instead of the actual files, to a git repo, songit can significantly lower the wait times of backups after the first one.