Introduction
Drush 9 Commands Example project (module) about "How To Write Custom Drush 9 Commands For Drupal 8 / 9"?
Requirements
Drush 9.x is the only supported version of Drush in Drupal 8.4.x and later versions, so it is imperative to learn how to write custom Drush commands for Drush 9.
This module shows how to write custom Drush 9 commands for Drupal 8 / 9.