1.官網下載壓縮包，并解壓到當地任一目錄。（我的是Documents/develop/mongodb）
2.在mongodb下新建data文件夾，在data下新建db文件夾。（bin和data文件夾在一級）
3.進入bin文件夾，并設置數據庫數據存放的地址變量
cd Documents/develop/mongodb/bin
./mongod --dbpath /Users/wangming/Documents/develop/mongodb/data/db
出現以下提示
2014-09-24T09:26:11.776+0800 [initandlisten] MongoDB starting : pid=1229 port=27017 dbpath=/Users/wangming/Documents/develop/mongodb/data/db 64-bit host=wangmingdeMacBook-Pro.local
2014-09-24T09:26:11.776+0800 [initandlisten]
2014-09-24T09:26:11.776+0800 [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
2014-09-24T09:26:11.776+0800 [initandlisten] db version v2.6.4
2014-09-24T09:26:11.776+0800 [initandlisten] git version: 3a830be0eb92d772aa855ebb711ac91d658ee910
2014-09-24T09:26:11.777+0800 [initandlisten] build info: Darwin bs-osx108-4 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 BOOST_LIB_VERSION=1_49
2014-09-24T09:26:11.777+0800 [initandlisten] allocator: system
2014-09-24T09:26:11.777+0800 [initandlisten] options: { storage: { dbPath: "/Users/wangming/Documents/develop/mongodb/data/db" } }
2014-09-24T09:26:11.785+0800 [initandlisten] journal dir=/Users/wangming/Documents/develop/mongodb/data/db/journal
2014-09-24T09:26:11.785+0800 [initandlisten] recover : no journal files present, no recovery needed
2014-09-24T09:26:11.800+0800 [FileAllocator] allocating new datafile /Users/wangming/Documents/develop/mongodb/data/db/local.ns, filling with zeroes...
2014-09-24T09:26:11.800+0800 [FileAllocator] creating directory /Users/wangming/Documents/develop/mongodb/data/db/_tmp
2014-09-24T09:26:11.829+0800 [FileAllocator] done allocating datafile /Users/wangming/Documents/develop/mongodb/data/db/local.ns, size: 16MB, took 0.029 secs
2014-09-24T09:26:11.899+0800 [FileAllocator] allocating new datafile /Users/wangming/Documents/develop/mongodb/data/db/local.0, filling with zeroes...
2014-09-24T09:26:12.075+0800 [FileAllocator] done allocating datafile /Users/wangming/Documents/develop/mongodb/data/db/local.0, size: 64MB, took 0.176 secs
2014-09-24T09:26:12.193+0800 [initandlisten] build index on: local.startup_log properties: { v: 1, key: { _id: 1 }, name: "_id_", ns: "local.startup_log" }
2014-09-24T09:26:12.194+0800 [initandlisten] added index to empty collection
2014-09-24T09:26:12.194+0800 [initandlisten] command local.$cmd command: create { create: "startup_log", size: 10485760, capped: true } ntoreturn:1 keyUpdates:0 numYields:0 reslen:37 394ms
2014-09-24T09:26:12.194+0800 [initandlisten] waiting for connections on port 27017
2014-09-24T09:26:23.841+0800 [initandlisten] connection accepted from 127.0.0.1:50778 #1 (1 connection now open)
2014-09-24T09:26:23.841+0800 [conn1] end connection 127.0.0.1:50778 (0 connections now open)
2014-09-24T09:26:23.994+0800 [initandlisten] connection accepted from 127.0.0.1:50780 #2 (1 connection now open)
2014-09-24T09:26:23.994+0800 [conn2] end connection 127.0.0.1:50780 (0 connections now open)
2014-09-24T09:27:11.814+0800 [clientcursormon] mem (MB) res:33 virt:2653
2014-09-24T09:27:11.814+0800 [clientcursormon] mapped (incl journal view):160
2014-09-24T09:27:11.814+0800 [clientcursormon] connections:0
2014-09-24T09:28:13.996+0800 [initandlisten] connection accepted from 127.0.0.1:50789 #3 (1 connection now open)
2014-09-24T09:32:11.887+0800 [clientcursormon] mem (MB) res:33 virt:2653
2014-09-24T09:32:11.887+0800 [clientcursormon] mapped (incl journal view):160
2014-09-24T09:32:11.887+0800 [clientcursormon] connections:1
2014-09-24T09:37:11.960+0800 [clientcursormon] mem (MB) res:33 virt:2653
2014-09-24T09:37:11.960+0800 [clientcursormon] mapped (incl journal view):160
2014-09-24T09:37:11.960+0800 [clientcursormon] connections:1
4.command＋T新建一個終端窗口，在bin文件下輸入./mongo指令
MongoDB shell version: 2.6.4
connecting to: test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
Server has startup warnings:
2014-09-24T09:26:11.776+0800 [initandlisten]
2014-09-24T09:26:11.776+0800 [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
至此，ok了。
?
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