I am on Ubuntu server and would like to send an email to myself every 10 minutes (as a test).

The code for that is in this file:

/var/www/cron-test.php

To set up the cron I typed:

crontab -e

and added this line to the bottom of the file using nano editor:

### email me every 10 min.
*/10 * * * * /var/www/cron-test.php

But that script is not running every 10 minutes. I only recieve the email if I load the PHP script directly in my browser. The cron doesn't seem to be executing at all.

What am I doing wrong?

Also this is my first time setting up a cron so putting the cron script in my www folder is probably not a good idea, should I put it elsewhere? If so where?

Also is there a cron error log? Where all failed crons can be seen?