1.安装
brew install mongodb
2.新开shell窗口，修改配置
mongod –config /usr/local/etc/mongod.conf
3.输入mongo即可看到：
4.
>monogo
>show dbs
test per
>use per // 切换数据库
>show collections// 查看collection
biao1 biao2
>db.biao1.find()// 查找collection
>db.biao1.drop()// 删除collection
>show dbs
test per
>use per
>db.dropDatabase() // 删除当前数据库，此时为per
http://www.jianshu.com/p/2d0a1ecd0c82
http://www.jianshu.com/p/1bb663918cfd
http://www.cnblogs.com/TankMa/archive/2011/06/08/2074947.html