Write a quick shell snippet to find all of the IPV4 IP addresses
in any and all of the files under /var/lib/output/*, ignoring
whatever else may be in those files. Perform a reverse lookup on
each, and format the output neatly, like "IP=192.168.0.1,
hostname=poodle.lindenlab.com". (Using perl, sed, awk, etc in your
commandline is fine, but don't use the perl libraries.)