It is very easy to create your own custom Drush commands. In this blog post I will show two examples for Drupal 7 and Drupal 8.

Creating custom Drush commands could be very useful when you need to import data into Drupal or export data from Drupal. You would have to create a separate bash script where you would execute your custom command and add the bash script to your crontab.

Drupal 8 example

Drupal 8 module structure:

drush_example/  - drush_example.info.yml  - drush_example.drush.inc

drush_example.info.yml: