I'm running delbuta (v3.1.20.5, 7/30/98), trying to delete
incrementals by age ("delbuta -a 31 -t i -n"), but keep getting

        Invalid age xx/xx/xx in backup dump file, delbuta exiting

Fortunately, I'm doing this with the '-n' option, so the fact that it's
reporting that it will remove _all_ of my incrementals (including
today's!), is only troubling, not earth-shattering.

Does delbuta in fact work to delete by age?

Thanks.

Pat Wilson
paw AT dartmouth DOT edu