[newbie] Crontab

[Monty Malik]

Hello all,

I just have a quick question about crontab.  How do I get a program to
run every 10 minutes.  I know that for something to run every hour the
format would be:

                                1 * * * * /usr/bin/...

would I use decimals or fractions to represent 10 minutes?  For example:

                                0.17 * * * * /usr/bin/...

or

                                1/6 * * * * /usr/bin/...


Are any of the  above lines right or is there a proper way to represent 10
minutes?

Any help would be greatly appreciated.

Thanks a bunch

Monty