How can I list all collections in the MongoDB shell?

You can do...

JavaScript (shell):

db.getCollectionNames()

Node.js:

db.listCollections()

Non-JavaScript (shell only):

show collections

The reason I call that non-JavaScript is because:

$ mongo prodmongo/app --eval "show collections"MongoDB shell version: 3.2.10connecting to: prodmongo/app2016-10-26T19:34:34.886-0400 E QUERY    [thread1] SyntaxError: missing ; before statement @(shell eval):1:5$ mongo prodmongo/app --eval "db.getCollectionNames()"MongoDB shell version: 3.2.10connecting to: prodmongo/app[    "Profiles",    "Unit_Info"]

If you really want that sweet, sweet show collections output, you can:

$ mongo prodmongo/app --eval "db.getCollectionNames().join('\n')"MongoDB shell version: 3.2.10connecting to: prodmongo/appProfilesUnit_Info

> show collections

will list all the collections in the currently selected DB, as stated in the command line help (help).

How do I list all collections for the current database that I'm using?

Three methods

• show collections
• show tables
• db.getCollectionNames()

To list all databases:

show dbs

To enter or use a given database:

use databasename

To list all collections:

show collections

Output:

collection1collection2system.indexes

(or)

show tables

Output:

collection1collection2system.indexes

(or)

db.getCollectionNames()

Output:

[ "collection1", "collection2", "system.indexes" ]

To enter or use given collection

use collectionname