title: How to use the dumped data by mongodump?
body: <p>I have used <code>mongodump</code> to dump my database of mongodb, it created some bson files under <code>dump/mydb</code></p>
  
  <p>But I don't know how to use them. I tried <code>mongoimport</code>, but seems it can't import bson data. Then how to use these bson files? How to import them to another mongodb?</p>