update drupal (for kpci7 drupal 8.9.x)

# update drupal
sudo drush -r /home/chiao/public_html/drupal ups

#Put the site into maintenance mode before updating using:
sudo drush -r /home/chiao/public_html/drupal sset system.maintenance_mode 1
sudo drush -r /home/chiao/public_html/drupal cr

#Execute the updates:
sudo drush -r /home/chiao/public_html/drupal up drupal

#Apply any required database and entity updates:
sudo drush -r /home/chiao/public_html/drupal updb
sudo drush -r /home/chiao/public_html/drupal entup
sudo drush -r /home/chiao/public_html/drupal sset system.maintenance_mode 0
sudo drush -r /home/chiao/public_html/drupal cr
Done!