Welcome to MongoDB Shell (mongosh)

Find Your Connection String

Find your connection string. The connection string varies depending on the type of deployment you're connecting to.

Learn how to find your connection string for Atlas.

Or connect to a self-hosted deployment.

Connect to MongoDB

Connect to a MongoDB deployment using the connection string.

The following connection string connects to an Atlas deployment:

mongosh "mongodb+srv://mycluster.abcd1.mongodb.net/myFirstDatabase" --apiVersion 1 --username <username>

Interact with Your Data

Use your chosen connection type to view your data, import documents, and run queries.

For more information, refer to Perform CRUD Operations.

Insert Documents

mongosh supports common insert opererations, including:

• db.collection.insertOne()

• db.collection.insertMany()

For more information and examples, refer to Insert Documents.

Read Documents

Use the db.collection.find() method to query documents in a collection. For more information and examples, refer to Query Documents.

Update Documents

mongosh supports common update operations, including:

• db.collection.updateOne()

• db.collection.updateMany()

• db.collection.replaceOne()

For more information and examples, refer to Update Documents.

Delete Documents

mongosh supports common delete operations, including:

• db.collection.deleteMany()

• db.collection.deleteOne()

For more information and examples, refer to Delete Documents.

Run Aggregation Pipelines

You can run aggregation pipelines in mongosh using the db.collection.aggregate() method. Aggregation pipelines transform your documents into aggregated results based on the stages you specify. For more information and examples, refer to Run Aggregation Pipelines.

Manage Databases and Collections

View information about databases, create collections or views, or drop databases - all from your shell. See all Database Methods.

Perform collection operations, create or delete indexes, or explain queries with Collection Methods.

Administer Servers

Manage replication or sharding conveniently in your shell.

Check server status with a variety of Server Status Methods.

Manage Users and Roles

Create or update roles, define and update privileges, or drop roles using Role Management Methods.

Create and update users, authenticate users, and manage user roles with User Management Methods.

Run Scripts for CRUD or Administrative Tasks

Write scripts to run with the MongoDB Shell that perform CRUD or administrative operations in MongoDB.

For example, if you have a JS file that seeds synthetic or mock data into MongoDB in your development or staging environment, run the file with:

mongosh YOUR_JS_FILENAME.js

Explore a tutorial that uses the MongoDB Shell with JavaScript to access MongoDB: Write Scripts.

Create Custom Helper Functions with .mongoshrc

Repeatedly writing large helper functions in the Shell? Store them in a .mongoshrc config file. For example, if you often find yourself converting date strings to ISO format for queries, create a function in .mongoshrc to handle it:

function toISO(dateString) {
   return new Date(dateString).toISOString();
}

Then, call the function in mongosh:

db.clientConnections.find( { connectTime: toISO("06/07/2017") } )

For more information, refer to Execute Code From a Configuration File.

Use or Publish Snippets

Pull existing snippets into your codebase for convenient reuse. Or create and share snippets for your custom use case.

For example, you might have a snippet that validates the data you import daily as a cron job. You can publish this snippet, so your development team can access it. Publish to a community registry or configure a private registry.

For more information, refer to Registries and Registry Configuration.