Cron to run every 30 minutes

How will you set up a job to run every 30 minutes, from midnight till 10 in morning, Monday to Friday?

*/30 0-10 * * 1-5 MyJob

Understanding the syntax

* * * * * *
| | | | | |
| | | | | +– Year (range: 1900-3000)
| | | | +—- Day of the Week (range: 1-7, 1 standing for Monday)
| | | +—— Month of the Year (range: 1-12)
| | +——– Day of the Month (range: 1-31)
| +———- Hour (range: 0-23)
+———— Minute (range: 0-59)

More on Cron Jobs

http://www.nncron.ru/help/EN/working/cron-format.htm