route statistics

I'm trying to collect statistics on how many routes match certain patterns. So far I've been using zebra, set term len 0, and then sh ip bgp regexp, and wait for the total prefixes count at the end of the list. I figure there must be a better way than this, but so far haven't found one. Any ideas? Ralph Doncaster principal, IStop.com div. of Doncaster Consulting Inc.