Drupal Drush is a command line shell and Unix scripting interface for Drupal.
Drupal Drush core ships with lots of useful commands for interacting with code like modules/themes/profiles. Similarly, it runs update.php, executes sql queries and DB migrations, and misc utilities like run cron or clear cache. Drupal Drush can be extended by 3rd party command files.
Drupal Smart IP identify visitor’s geographical location (longitude/latitude), country, region, city and postal code based on the IP address of the user. These information will be stored at Drupal session variable.