I have a mongodb  database created by my mongoUpdateSlurpGS.rb Ruby script with Thunderbird Get Satisfaction support topics from July 20, 2009 until the present (i.e. roughly 40000 topics) and I would like to know for a given time period how many support topics were created or modified. To calculate this, I wrote a second ruby script called alltopicsCreatedOrUpdated.rb (and the code is embedded below). My question is: is there really a need for a ruby script here.? Could the nested for "each" loop in alltopicsCreatedOrUpdated.rb  be replaced by a couple of mongodb queries using the mongodb command line interface?