in reply to maintain control over very many files

I guess I can't tell you much if you don't supply a little context.

For instance, do these new files need to be uploaded somewhere else? Then use rsync.
Do you need to just report these files? Use a perl-script.

Sinister greetings.
"With tying hashes you can do everything God and Larry have forbidden" -- Johan Vromans - YAPC::Europe 2001
perldoc -q $_