Cron在magento 2中设置

Question

I have tried to set up cron for magento 2 for receiving automated email. But it is not working. I didn't receive any emails

This is the command I used:

/usr/local/bin/php -c /home/foodstoc/public_html/bin/magento cron::run >/dev/null 2>&1

/usr/local/bin/php -c /home/foodstoc/public_html/update/cron.php >/dev/null 2>&1

/usr/local/bin/php -c /home/foodstoc/public_html/bin/magento setup:cron:run >/dev/null 2>&1

I also tried the following command:

/usr/local/bin/php /home/foodstoc/public_html/bin/magento cron:run | grep -v "Ran jobs by schedule" >> /home/foodstoc/public_html/bin/magento/var/log/magento.cron.log

Note: when I run cron:run directly I receive email. But it is not getting automated.