Seems to be some concern with bad guys planting false dns records. I was thinking about a script to periodically check for addresses not pointed to the local machine. I can do recursive greps and use the -v option but I have to run too many iterations in the current form. I'd save a lot of 'mess' if I could just grep out A records. How do I match the pattern " IN A"? I've tried a couple things but I guess I just don't understand pattern matching that well.
OK. Quick edit. I've figured out I should be concentrating on IP addresses instead of the "IN A". I'd still like to know for future reference how to do that though.
I'll take look at pattern matching with digits in the form of xxx.xxx.xxx.xxx instead.