[olug] Testing contents of resolv.conf

[Dave Thacker]

Scenario:

The corporate mothership hath decreed that a new IP address be added to 
/etc/resolv.conf on all linux devices, including some IVR appliances in my 
realm.  (CentOS  and Red Hat)  The new address points to a snazzy new DNS 
appliance.

The Name Service Caching Daemon (nscd) is not in use, these boxes do not run 
any SMTP.  The primary application has the addresses it needs in /etc/hosts. 
My google-fu has failed me on finding a suitable way to see if this second ip 
address would be used in a DNS lookup.   Anybody got a command line I could 
run and pull a return from?

Dave