MongoDB Installation and Basic commands

I am a mongodb installed in CentOS1. Download MongoDBCurl-o http://downloads.mongodb.org/linux/mongodb-linux-x86_64-2.6.3.tgz2. Unzip the downloaded documentTAR-ZXVF mongodb-linux-x86_64-2.6.3.tgz3. Installing MongoDB

Cp-r mongodb-linux-x86_64-2.6.3/*/usr/local/mongo

Start MongoDB

The port for MongoDB successfully started is 27017

If you want to start the MongoDB input command in the background (use--fork to specify the--logpath parameter, establish log/in the MONGO directory)

./bin/mongod--dbpath=/data/db--fork--logpath=log/mongodb.log

simple operation of MongoDB

Enable a window to switch to the MONGO directory

Type./bin/mongo Use the MongoDB default client to manipulate data

1.help--mongo Help

2.show DBS; --View all databases

3.show collections; --Displays the collection in the current database (similar to a table in a relational database)

4.use dbname;--Switch database

5.db.getname (); --View the current database name

6.db.stats (); --Displays the current DB status

7. Db.getmongo (); --View the link machine address of the current DB

Collection Aggregation Collection

1. Create a Clustered collection (table)

Db.createcollection ("Collname", {size:20, Capped:5, max:100});

2. Get a clustered collection with the specified name (table)

Db.getcollection ("account");

3. Get all the aggregation sets for the current DB

Db.getcollectionnames ();

4. Displays the status of all clustered indexes in the current DB

Db.printcollectionstats ();

MongoDB Installation and Basic commands