mongodb command line query collection code example

Example 1: show collections in mongodb

db.getCollectionNames()

Example 2: mongo shell commands

show dbs # <=> Print a list of all databases on the server.
use <db> # <=> Switch current database to <db>
show collections # <=> Print a list of all collections for current database.
db.people.insert({name:"Ashwin",gender:"m"}) # <=> Inserts a new "person" collection with a new object in that collection
db.people.find(<any attributes or none>) # <=> Find all persons in the collection
db.people.update({name:"Ashwin"},{gender:"f"}) # <=> Updates the selected (1st parameter) person with new value(2nd parameter)
db.people.remove({name:"Ashwin"}) # <=> Remove where name is "Ashwin"
db.people.drop() # <=> Delete the "people" collection