安裝后在控制臺輸入:
mongo啟動客戶端。
show dbs顯示所有數據庫。
use xxx選中數據庫為當前使用的數據庫。
show collections顯示當前數據庫的所有集合。
db.colleciton.find()來查找表格的所有數據。
db.serverStatus()查看數據庫服務器的狀態。
db.stats()查詢指定數據庫的統計信息。
use xxx如果數據庫不存在則創建數據庫（必須在雖然插入一條數據）
db.storeCollection.insert({'version':'13', 'segment':'456'})插入數據，同時創建集合
db.dropDatabase()刪除數據庫
db.mycoll.drop()刪除集合
db.storeCollection.save({'version':'3.5', 'segment':'e3ol6'})更新記錄
db.storeCollection.remove({'version':'3.5'}) 刪除記錄
db.page.ensureIndex({'title':1, 'url':-1})創建索引，1正序，-1逆序
db.page.getIndexes()查詢建立的索引
db.mycoll.dropIndex(name) 刪除索引，如果不帶參數，刪除所有索引
db.baseSe.reIndex()重建索引
db.baseSe.storageSize()查詢指定數據庫的集合的可用的存儲空間
db.baseSe.totalSize()查詢集合已分配的存儲空間
PS：非正常關閉后無法啟動問題
段時間不小心非正常關閉了mongoDB，準備重啟卻發現不行，錯誤信息如下：
Tue Apr 17 11:13:30Tue Apr 17 11:13:30 warning: 32-bit servers don't have journaling enabled by default. Please use --journal if you want durability.Tue Apr 17 11:13:30Tue Apr 17 11:13:30 [initandlisten] MongoDB starting : pid=7128 port=27017 dbpath=D:/Programs/mongodb204/db 32-bit host=FALCONTue Apr 17 11:13:30 [initandlisten]Tue Apr 17 11:13:30 [initandlisten] ** NOTE: when using MongoDB 32 bit, you are limited to about 2 gigabytes of dataTue Apr 17 11:13:30 [initandlisten] ** see http://blog.mongodb.org/post/137788967/32-bit-limitationsTue Apr 17 11:13:30 [initandlisten] ** with --journal, the limit is lowerTue Apr 17 11:13:30 [initandlisten]Tue Apr 17 11:13:30 [initandlisten] db version v2.0.4, pdfile version 4.5Tue Apr 17 11:13:30 [initandlisten] git version: 329f3c47fe8136c03392c8f0e548506cb21f8ebfTue Apr 17 11:13:30 [initandlisten] build info: windows sys.getwindowsversion(major=6, minor=0, build=6002, platform=2, service_pack='Service Pack 2')BOOST_LIB_VERSION=1_42Tue Apr 17 11:13:30 [initandlisten] options: { dbpath: "D:/Programs/mongodb204/db" }**************Unclean shutdown detected.Please visit http://dochub.mongodb.org/core/repair for recovery instructions.*************Tue Apr 17 11:13:30 [initandlisten] exception in initAndListen: 12596 old lock file, terminatingTue Apr 17 11:13:30 dbexit:Tue Apr 17 11:13:30 [initandlisten] shutdown: going to close listening sockets...Tue Apr 17 11:13:30 [initandlisten] shutdown: going to flush diaglog...Tue Apr 17 11:13:30 [initandlisten] shutdown: going to close sockets...Tue Apr 17 11:13:30 [initandlisten] shutdown: waiting for fs preallocator...Tue Apr 17 11:13:30 [initandlisten] shutdown: closing all files...Tue Apr 17 11:13:30 [initandlisten] closeAllFiles() finishedTue Apr 17 11:13:30 dbexit: really exiting now解決方法：
1、刪除%MONGO_HOME%/db下的.lock文件
2、輸入命令 mongod --repair
3、重啟mongoDB
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