Delete everything in a MongoDB database

Question

I'm doing development on MongoDB. For totally non-evil purposes, I sometimes want to blow away everything in a database—that is, to delete every single collection, and whatever else might be lying around, and start from scratch. Is there a single line of code that will let me do this? Bonus points for giving both a MongoDB console method and a MongoDB Ruby driver method. 

Answer 1

For deleting everything in a MongoDB database you can use following queries:-

use [database];

db.dropDatabase();

Answer 2

Just implement the following command:

mongo DATABASE_NAME --eval "db.dropDatabase();"