參考部落格：http://my.oschina.net/Kenyon/blog/99742


mongodb安裝過程

1、解壓縮

[[email protected] opt]# tar -zxvf mongodb-linux-i686-2.4.9.tgz

mongodb-linux-i686-2.4.9/README

mongodb-linux-i686-2.4.9/THIRD-PARTY-NOTICES

mongodb-linux-i686-2.4.9/GNU-AGPL-3.0

2、重新命名資料夾

[[email protected] opt]# mv mongodb-linux-i686-2.4.9 mongodb

3、建立資料庫日誌資料夾和資料資料夾

[

[email protected] mongodb]# mkdir log

[[email protected] mongodb]# mkdir data

4、啟動服務

[[email protected] mongodb]# cd bin

[[email protected] bin]#

[[email protected] bin]# ./mongod --dbpath=/opt/mongodb/data --logpath=/opt/mongodb/log/mongodb.log --logappend &

[1] 16334

[[email protected] bin]# all output going to: /opt/mongodb/log/mongodb.log

5、注意安裝的版本（32位還是64位）否則啟動服務可能報下面的錯誤

[[email protected] bin]# ./mongod: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

mongodb常用命令

1、連線mongodb

[[email protected] opt]# cd mongodb/bin

[

[email protected] bin]# ./mongo

MongoDB shell version: 2.4.9

connecting to: test

> use local

switched to db local

> show collections

ewalletlog

ewalletlogs

startup_log

system.indexes

>

> db.ewalletlogs.find();

2、檢視現有的資料庫> show dbs;
local   (empty)
test    0.203125GB

3、資料庫切換> use local;
switched to db local
> use test;
switched to db test
>

4、顯示collctions> show collections;
kenyon
system.indexes
test
things
>

5、資料插入方式一(save)：
> db.kenyon.save({id:8899,name:'kenyon_test_mongo'});
> db.kenyon.save({id:99,name:'kenyon_test_mongo',remark:'first time here'});

方式二(預定義)：
> tmp={id:0909,name:'kenyon_test',create_time:'2013-01-01'};
> db.kenyon.insert(tmp);

方式三(迴圈插)：
> for (var i = 1; i <= 25; i++) db.tab_kenyon.insert( { x : 4 , j : i } )
> db.tab_kenyon.find();
{ "_id" : ObjectId("50e4b8007a86419166fd68f0"), "x" : 4, "j" : 1 }
{ "_id" : ObjectId("50e4b8007a86419166fd68f1"), "x" : 4, "j" : 2 }
{ "_id" : ObjectId("50e4b8007a86419166fd68f2"), "x" : 4, "j" : 3 }


如果不存在collection會自動建立，不會報錯，顯示資料時預設是顯示20條資料，輸入it來檢視下一頁的20條資料

6、資料檢索

1） 普通方式> db.kenyon.find();
{ "_id" : ObjectId("50e49c55f8de48037fe44062"), "name" : "mongo" }
{ "_id" : ObjectId("50e49d2ecd320366f7122605"), "name" : "mongo", "id" : "888" }
{ "_id" : ObjectId("50e4b3fe7a86419166fd68ed"), "id" : 8899, "name" : "kenyon_test_mongo" }
{ "_id" : ObjectId("50e4b4167a86419166fd68ee"), "id" : 99, "name" : "kenyon_test_mongo", "remark" : "first time here" }
{ "_id" : ObjectId("50e4b6817a86419166fd68ef"), "id" : 909, "name" : "kenyon_test", "create_time" : "2013-01-01" }

2）查詢一條資料> db.kenyon.findOne();
{ "_id" : ObjectId("50e49c55f8de48037fe44062"), "name" : "mongo" }

3）條件檢索> db.kenyon.find();
{ "_id" : ObjectId("50e49c55f8de48037fe44062"), "name" : "mongo" }
{ "_id" : ObjectId("50e49d2ecd320366f7122605"), "name" : "mongo", "id" : "888" }
{ "_id" : ObjectId("50e4b3fe7a86419166fd68ed"), "id" : 8899, "name" : "kenyon_test_mongo" }
{ "_id" : ObjectId("50e4b4167a86419166fd68ee"), "id" : 99, "name" : "kenyon_test_mongo", "remark" : "first time here" }
{ "_id" : ObjectId("50e4b6817a86419166fd68ef"), "id" : 909, "name" : "kenyon_test", "create_time" : "2013-01-01" }

> db.kenyon.find({id:909});
{ "_id" : ObjectId("50e4b6817a86419166fd68ef"), "id" : 909, "name" : "kenyon_test", "create_time" : "2013-01-01" }

> db.kenyon.find({name:"mongo"});
{ "_id" : ObjectId("50e49c55f8de48037fe44062"), "name" : "mongo" }
{ "_id" : ObjectId("50e49d2ecd320366f7122605"), "name" : "mongo", "id" : "888" }

4) 通過正則表示式進行模糊查詢

>db.ewalletlogs.find({message:/^2014-02-13 12:*/});

5）限制查詢(limit)

> db.kenyon.find().limit(2)
{ "_id" : ObjectId("50e49c55f8de48037fe44062"), "name" : "mongo" }
{ "_id" : ObjectId("50e49d2ecd320366f7122605"), "name" : "mongo", "id" : "888" }

7、mongo的shell幫助> help
        db.help()                    help on db methods
        db.mycoll.help()             help on collection methods
        sh.help()                    sharding helpers
        rs.help()                    replica set helpers
        help admin                   administrative help
        help connect                 connecting to a db help
        help keys                    key shortcuts
        help misc                    misc things to know
        help mr                      mapreduce

        show dbs                     show database names
        show collections             show collections in current database
        show users                   show users in current database
        show profile                 show most recent system.profile entries with time >= 1ms
        show logs                    show the accessible logger names
        show log [name]              prints out the last segment of log in memory, 'global' is default
        use                 set current database
        db.foo.find()                list objects in collection foo
        db.foo.find( { a : 1 } )     list objects in foo where a == 1
        it                           result of the last line evaluated; use to further iterate
        DBQuery.shellBatchSize = x   set default number of items to display on shell
        exit                         quit the mongo shell


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