MSBlast CLI scanner (unix)?

Nanog'ers,

I've seen a couple of the windows-based MSBlast scanners but I'm looking
for a unix tool to simply plug in an IP/netmask and have it scan via the
command line and return the status of the vulnerability (patched,
unaffected, exploited, etc).

Has anyone found or heard of one that runs on *nix or have any other
suggestions?

thanks,
davidu