I wrote this to see ticket availability for The Daily Show but it should work for most other recurring events on ShowClix.
Search for events at ShowClix and pass the script the event name from the url. For example, TheDailyShowwithJonStewart from http://www.showclix.com/event/TheDailyShowwithJonStewart.
$ bundle exec ruby -Ilib bin/show_clix.rb TheDailyShowwithJonStewart
2015-04-21 at 6:00pm is sold out.
2015-04-22 at 6:00pm is sold out.
...
2015-05-14 at 6:00pm is sold out.