I want to create a cron that runs every 30 minutes.
I am using another cron as an example - I have created the cron in a
config.xml file, not using the admin interface.
The example I am using is the following:
<tracking_cron> <schedule><cron_expr>0 4 * * *</cron_expr></schedule> <run> <model>tracking/observer::cron</model> </run> </tracking_cron>
My questions are as follows:
1) On what intervals is the above cron being run?
2) What would the
cron_expr be for a cron that should run every 30 minutes?