I was also looking for just this sort of package, but never did find one. There are some similar tools, but none that perform the functions you're looking for.
* tripwire monitors systems and reports modifications to files, but it doesn't tell you what was changed, only that they were changed. * moninst comes close, but doesn't handle additions and deletions of files. I was thinking of writing a package to do this, but it'll take me awhile, it's not my top priority at the moment. -jay
