Install and Update Drupal 8 modules

To install a Drupal 8 module via Composer you need to run the following command

composer require drupal/module_name

For example to install the Drupal commerce module you need to run

composer require drupal/commerce

To update a Drupal 8 module you need to run the following command

composer update drupal/module_name --with-dependencies

For example to update the Mail system module you need to run

composer update drupal/mailsystem --with-dependencies

Thank you and looking forward to help you do more with Drupal