works (almost) like a charm

Works great, though one problem I ran into – the check for a valid -H value assumes that all components of a hostname start with a letter, and some of ours start with a digit, so I had to adjust the regular expression. (I was confused about why it was telling me “No target host specified” until I checked the code and understood that that message should have been “No target host, or I didn’t like the one you gave me” 🙂 )