I already have Drupal 8.4.2. Now I want to upgrade to 8.4.3 via commandline.
Via Drupal commands or Composer.
How to do that?
Easy way :
composer update
drush updb # or update.php via browser
Using Drush:
Update Drupal 8 core drush up drupal
Update a single module drush up module_name
Update only security updates drush up --security-only
Manual Updation:
drush up drupal
gives Unable to load class \Drush\VersionControl\Backup
error
If you are using Drupal Console, then have a look at following command:
drupal module:update [arguments] [options]
moup
Reference: https://hechoendrupal.gitbooks.io/drupal-console/content/en/commands/module-update.html