title: MongoDB drop every database
body: <p>I would like to know if there're a command to drop every databases from my MongoDB?</p>
  
  <p>I know if I want to drop only one datatable, I just need to type the name of the database like the code below but I dont want to have to specify it.</p>
  
  <pre><code>mongo DB_NAME --eval 'db.dropDatabase();'
  </code></pre>