How to install MongoDB on Mac OS X I showed already here:
https://robert-reiz.com/2011/08/11/installing-mongodb-on-mac-ox-x-lion/
If everything is installed correctly, you can start the server process as root with this command:
mongod
and the client as no root with this command:
mongo
By default you are logged in into the “test” database. You can show all dbs with this command:
show dbs
you can switch to an existing DB or create a new DB with this command:
use mynewdb
With this command here you can show alle “collections” inside of the DB:
show collections
You can make an insert with this command:
db.users.save( { name : "myname" } )
If the collections “users” does not exist it will be created with the first call. With this command you can see all entries in the collection “users”:
db.users.find()
With count() you can see how many elements are in the collection.
db.users.count()
And with “remove” you can remove alle elements from a collections.
db.users.remove()
And with drop you can drop the entire collection.
db.users.drop()
Robert Reiz 