MongoDB MONGO shell, common operation commands, GUI client

The MONGO shell is a JavaScript interface used to connect MongoDB, providing users with the means to query and manipulate data in MongoDB, and to manage MongoDB.
start and automatically connect to a MongoDB instance:The default installation in "/usr/bin/", with "which" command can be viewed to: # which Mongo/usr/bin/mongo so you can run directly: # MONGO MongoDB Shell version:3.2.3 connecting To:test ... The default is to connect to port 27017 on localhost and use the test database by default.
to switch to a different database:> Use <db_name>
Insert (Create):Insert Command Reference: https://docs.mongodb.org/manual/tutorial/insert-documents/

> Db.<collection_name>.insert ({key:value}); # "DB" indicates the currently used db. For example: > Db.testCollection.insert ({name: "Xu"}) Writeresult ({"ninserted": 1})
query (Read):Query Command reference: https://docs.mongodb.org/manual/tutorial/query-documents/

> Db.<collection_name>.find () #没带条件表示查询所有, default returns 20 such as: > Db.testCollection.find () {"_id": ObjectId ("56ca7c 37012557f8f72c9a1f ")," name ":" Xu "}
Landscaping query Result: > Db.myCollection.find (). Pretty ()
Modify (Update):Modify Command Reference: https://docs.mongodb.org/manual/tutorial/modify-documents/
> db.<collection_name>.update ({key: "value"}, {key: "NewValue"}) # (the first parameter is the query condition, the second parameter is the content of the update)

For example: > Db.testCollection.update (... {Name: "Xu"}, ... {Name: "Clement-xu"}) Writeresult ({"nmatched": 1, "nupserted": 0, "nmodified": 1}) > Db.testCollection.find (). Pretty () {"_id": objecti D ("56ca7c37012557f8f72c9a1f"), "name": "Xujijun"}
Remove (delete):Delete Command reference: https://docs.mongodb.org/manual/tutorial/remove-documents/
> Db.<collection_name>.remove ({key: "value"}) #如果不带参数, delete all
For example: > Db.testCollection.remove (... {Name: "Clement-xu"}) Writeresult ({"nremoved": 1})
Exit MONGO Shell: > Quit () or exit or <Ctrl-c>
Graphical (GUI) client:Robomongo:https://robomongo.org need to modify the MongoDB configuration file, remove the IP bindings: # vi/etc/mongod.conf Comment out this sentence: bindip:127.0.0.1 then restart the service: # Ser Vice Mongod restart
Specify IP and port connections after starting Robomongo:
Note: The latest version of Robomongo has canceled the SSH tunnel function (unknown). Do what you need, such as through SECURECRT.