By Ilya Grigorik on March 29, 2007 Whether it is retrieving an RSS feed, or performing some maintenance operations on your system or a Rails app, an easy to use scheduler is a must have. Motivated by this need, I did some scouring and came up with a few nifty ways to accomplish the task. Now, before we go on, it's worth mentioning that all *nix based systems have the advantage of a cron daemon whi