How can i add a cron job run every minute to my elearning site on moodle? - moodle

Question

I try to add a cron job on an elearning.mysite.gr(Moodle). Although my host gives this message every hour.
Oct 2 1:10:01 linux CROND[123456]: (admin) CMD (touch /tmp/test.txt > /dev/null)
On my site administration -> notifications get this message:
The admin/cli/cron.php script has not been run for 3 days 2 hours and should run every 1 min.
At moodle documentation
/path/to/moodle/admin/cli/cron.php, can i use it ? in which way ?
I tried this :
/usr/bin/php /path/to/moodle/admin/cli/cron.php
but gives me that the process completed with error at one minute
only this touch /tmp/test.txt > /dev/null
completed with success.
Moodle Documentation:
The CLI (command line interpreter) script. This will be at the path /path/to/moodle/admin/cli/cron.php
If in doubt, this is the correct script to use. This needs to be run by a 'PHP CLI' program on your computer. So the final command may look something like /usr/bin/php /path/to/moodle/admin/cli/cron.php You can (and should) try this on your command line to see if it works. WARNING: Check your command-line PHP version is compatible with your chosen version of Moodle.-How to check it?
The command-line PHP program is different to the one running your web site and is not always the same version.
I don't know what to do...I will appreciate any help!!!
I tried by my host panel interface :
Type of progress:
Command line
URL
PHP
i should choose one from 3.
Command*:
placeholder to add my command to be excecuted
Excecute:
Dropdown
1.Cron style
2.Daily at 00:00
I use command line.
touch /tmp/test.txt
When i add
cron style and 1 * * * * * , get message for syntax.
and for
daily at 00:00 success message but on my notification of my site has
The admin/cli/cron.php script has not been run for 17 days 22 hours and should run every 1 min.
That's the icon of my Plesk Login. To change the path/to/moodle/admin/cli/cron.php xould i check the file manager in order to find cron.php file ??

Answer 1

As you add the cron from a web interface (maybe Plesk ?) you only need this part:
/path/to/moodle/admin/cli/cron.php
replace /path/to/moodle/ with the real path on your server, usulay something like /var/www/moodle/ or /var/www/vhosts/domain.name/httpdocs/moodle
To run every 1 minute cron style is :
* * * * *
If you can choose PHP version, choose the same version as the one you are using for Moodle.

Answer 2

Finally, I give this touch /tmp/test.txt ->and at cron style the touch /tmp/test.txt, as you suggest to me.
Because the other commands cannot complete with success.
But in my notifications,(Site administration-Moodle) i still get the message that cron don't run.