Mongo/Databases

Getting Info About Databases

Mongo shell

Start the mongo shell:

$ mongo
>

To list all available databases, use any of these commands:

> db.adminCommand('listDatabases')
> db.getMongo().getDBNames()
> show databases
> show dbs

Show all tables and collections in a database:

> use test_db
> show tables
> show collections
> db.getCollectionNames()

Command line

To bypass the javascript shell and run commands directly from the command line, run the commands using --eval:

mongo <dbname> --eval "db.getMongo().getDBNames()"
mongo <dbname> --eval "db.getCollectionNames()"
mongo <dbname> --eval "db.dropDatabase()"

Removing (Dropping) Databases

To remove (drop) a database, use the db.dropDatabase() function. From the mongo shell:

$ mongo
> use test_db
> db.dropDatabase()