MongoDB Commands

mongod.exe --dbpath "D:\mongodb\data\db"
mongod --auth --port 27017 --dbpath /var/lib/mongodb

//User Login
mongo --port 27017  --authenticationDatabase "admin" -u "myUserAdmin" -p

//Backup Database
mongodump --db={db name} --out="{path}" --username={username} --password="{password}"
mongodump --db=omrani --out=D:/mongodb/data/backup/`date +"%m-%d-%y"` --username=omrani --password="{password}"

//Restore DB
mongorestore --db {dbName} --username {Username} --password {Password} --authenticationDatabase {dbName} --dir {Source Path}

db.createUser(
  {
    user: "dbUseranem",
    pwd:  passwordPrompt(),   // or cleartext password
    roles: [ { role: "readWrite", db: "dbName" } ]
  }
)

//Change Type Of Field
db.people.find().forEach( function(obj) {
	if(obj.birth){
		obj.birth.birthday.year= new NumberInt(obj.birth.birthday.year);
		obj.birth.birthday.month= new NumberInt(obj.birth.birthday.month);
		obj.birth.birthday.day= new NumberInt(obj.birth.birthday.day);
		db.people.save(obj);
	}
});