After much trial and error, this command line seems to work in the Cpanel cron environment:
wget -q -t 1 'https:///administrator/components/com_civicrm/civicrm/bin/cron.php?name=&pass=&key='
instead of php trying to run cron.php.
Welcome to SE! The error includes /bin/sh^M: bad interpreter. The ^M part suggests you created the file on a Windows machine and copied it to your Linux server. Linux and Windows have different conventions for marking the end of a line. See this for more explanation.
For are many ways to fix that. If you have ssh to the Linux box try running this to ...
I just set it up with dreamhost shared hosting.
I went into cron jobs in my dreamhost control panel and added a new job.
under command to run I put
"/usr/bin/php /home/DREAMHOST-USER/EXAMPLE.COM/wp-content/plugins/civicrm/civicrm/bin/cli.php -u WP-USER -p WP-USER-PASS -e Job -a execute"
Obviously leave out the quotation marks and change all the sections in ...