title: Rails—how to drop a specific database?
body: <p><code>rake db:drop</code> destroys everything, but I only want to drop specific db's.</p>
  
  <p>I tried a parallel testing gem which created these databases: <code>my_db_test2, my_db_test3, my_db_test4</code></p>
  
  <p>How do I delete only those databases?</p>