[rdiff-backup-users] How do I setup the backup?

[J. Norment]

I've tried to understand the backup exclude mechanism, but, apparently, 
have failed dismally.

-- so I'm just going to ask (I have been trying on -and off for about a 
month now, and really need to get this online.)

Where I have the following structure:

/home
.../lost+found
.../foo-users
.../shares
....../music
........./foo-users
....../share.ppsi
........./no.backup
........./(most paths in the backup)
....../script
........./backup-goes-here

and I want to back up everything in /home except for the (music and all 
sub-paths under music) and the (no.backup and all sub-paths under 
no.backup),  how do I set up my exclude file, and what command do I use 
to execute rdiff-backup?

-- Also -- now that rdiff backup has incorrectly backed up a path that I 
don't want backed up, how do I reset it to a state where it thinks it is 
the first backup ever -- so that I can continue testing with a clean set?

Thanks for any help given.

--J. Norment