How to check Drush version? How can I identify what version of Drush is installed on a given system?
Assuming you have Drush installed and working properly, just type drush status in your command prompt. It will give you drush version as well as Drupal version info. If you have aliases set up for remote (or local) sites, you can run drush @alias status and it will give you the status info for that remote system.