If you want a couple more features, try my fork of the tool

[headtailgrep]

Since this code is basically no longer maintained, i've added my updates to the tool in a new fork, Pull it down if you want a couple added features to graphing to make them a bit more pretty or pull the code and put it in yours.

I've also added an install guide and text file in my fork that will help anyone trying to deploy this. Good luck and hope to hear from you here! Thanks again to John Reiser and any users for using it and best of luck!