Mongo DB on Ubuntu

Login to database

mongo

List available databases 

show dbs

or

 db.adminCommand( { listDatabases: 1 } )

Change active DB

use <db name>

List DB collections (tables)

show collections

List collection rows

db.<collectionName>.find()

or

db.<collectionName>.find().pretty()

Get documents count inside a collection

db.<collectionName>.count()

Bulk insert documents inside a collection

db.<collectionName>.insertMany( [

   { item: "journal", qty: 25, size: { h: 14, w: 21, uom: "cm" }, status: "A" },

   { item: "notebook", qty: 50, size: { h: 8.5, w: 11, uom: "in" }, status: "P" },

   { item: "paper", qty: 100, size: { h: 8.5, w: 11, uom: "in" }, status: "D" },

   { item: "planner", qty: 75, size: { h: 22.85, w: 30, uom: "cm" }, status: "D" },

   { item: "postcard", qty: 45, size: { h: 10, w: 15.25, uom: "cm" }, status: "A" },

] );

Delete a document from a collection

db.<collectionName>.deleteOne( {  "SystemName" : "Help" } )

db.<collectionName>.deleteMany({                   })

Search for documents inside a collection

db.<collectionName>.find({id:'xxxx'})

Backup Database 

mongodump -h sample.mongodbhost.com:27017 -d DATABASE_NAME -u USER_NAME -p SAMPLE_PASSWORD -o ~/Desktop

or

mongodump --uri "mongodb://usersname:password@127.0.0.1:27100/dbname?replicaSet=replica_name&authSource=admin" --out "C:\Umesh"




Restore Database 

mongorestore --host sample.mongohost.com --port 27017 --username USER_NAME --password SAMPLE_PASSWORD --db DATABASE_NAME .

or

mongorestore mongodb+srv://UserID:Password@ServerIP/DBName   Path2Dump

or

mongorestore --uri "mongodb://usersname:password@127.0.0.1:27100/dbname?replicaSet=replica_name&authSource=admin" -d dbname mongodbumppath