This document introduces Drush, a command line utility for Drupal. Drush allows users to manage Drupal sites from the command line and provides commands for common tasks like downloading modules, enabling/disabling modules, clearing caches, and exporting databases. Drush is easy for sysadmins and developers to install and use, runs on all major operating systems, and its commands can save significant time for managing Drupal sites. The document provides an overview of installing Drush and describes some common Drush commands.