How to interpret this crontab command?

Posted by Bakhtiyor on Ask Ubuntu See other posts from Ask Ubuntu or by Bakhtiyor
Published on 2011-02-12T00:09:51Z Indexed on 2011/02/12 7:33 UTC
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I know that if I wrote in crontab -e following command 01 04 * * * somecommand then it will run somecommand at 4:01am on every day of every month.

What happens if I wrote * * * * * somecommand? Will it run somecommand every single minute? Will this syntax work also?

And it is possible to use special strings like @reboot, @daily, etc as it is explained here. At what time of the day somecommand will be executed if I write @daily somecommand command?

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