> Well, there's this thing called mtree(8) I've heard about -- 
> I'm told someone even added md5 signature checking to it at 
> some point.  ;-)
> 
> tripwire?  TAMU tiger?

People are looking at Integrit, just because it's the first thing a search
turned up:

http://integrit.sourceforge.net/

> Or is this on wintookie?

AIX [and pains].

-Jon