Cron trigger to run at half past the hour every hour

Question

Can anyone suggest a way to set a Cron trigger to run at half past the hour every hour?

So far, I've got one working hourly as per "0 0/60 * * * ?".

Am I looking at "0 0/30 * * * ?" at all?

Mr Morgan.

Answer 1

I would use 30 * * * * to run a command half past every hour.

It is worth remembering that in crontab you define a pattern to match the current time against and not an exact time. Every minute crond will awaken and match the current time against your pattern and if there is a match, run your command.

Answer 2

I recommend using http://www.cronmaker.com/ for painless cron expressions.