What is DRUSH in Drupal?

In a Drupal interview, if asked about DRUSH (Drupal Shell), a correct answer would be:

“DRUSH is a command-line shell and scripting interface for Drupal. It provides a wide range of commands for performing various administrative and development tasks on Drupal sites. With DRUSH, developers can perform tasks such as installing and updating modules, clearing caches, running database updates, and executing various other administrative tasks efficiently from the command line interface, thus saving time and effort compared to performing these tasks through the Drupal administration interface.”