title: How would test cron with Magento?
body: <p>First I need to understand how Magento cron works.</p>
  
  <p>I know how cron works on linux, using <code>crontab -e</code>.<br>
  I know I need to set up Magento's cron.php to run periodically </p>
  
  <p>But when I define cron within magento config file, how does they match that they should be run?</p>
  
  <p>Because if set my cron.php to run every 15 min (<code>0,15,30,45 * * * *</code>) and I have a Magento cron  <code>&lt;schedule&gt;&lt;cron_expr&gt;10 * * * *&lt;/cron_expr&gt;&lt;/schedule&gt;</code> for example.</p>
  
  <p>How will it match/work?</p>
  
  <p>By the way, how could I test that my cron works without waiting a long time?</p>