From the Drush project page:
"Drush is a command line shell and scripting interface for Drupal, a veritable Swiss Army knife designed to make life easier for those of us who spend some of our working hours hacking away at the command prompt."
This presentation will demonstrate several useful command in Drush that We as Website Builder can use and take advantage. Drush runs on command line interface but promise this will not scare you! even beginner will love this tool!