I created the cron job like docs
*/1 * * * * /usr/bin/php -c /etc/php5/apache2/php.ini /var/www/magento2/bin/magento cron:run > /var/www/magento2/var/log/magento.cron.log&
*/1 * * * * /usr/bin/php -c /etc/php5/apache2/php.ini /var/www/magento2/update/cron.php > /var/www/magento2/var/log/update.cron.log&
*/1 * * * * /usr/bin/php -c /etc/php5/apache2/php.ini /var/www/magento2/bin/magento setup:cron:run > /var/www/magento2/var/log/setup.cron.log&
But docs says that "Most Magento modules are in the default group; other modules are in the index group."
and
magento cron:run [--group="<cron group name>"]
where --group specifies the cron group to run (omit this option to run cron for the default group)
So, with the above cron job are also runned cron for the index group?
If yes, how?