Javascript 如何以root/管理员身份全局安装文件？

当我尝试npm安装-g jshint时，我得到以下读数

user-MacBook-Pro:~ davidgoldberg$ npm install -g jshint
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint'
npm ERR!  { [Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/local/lib/node_modules/jshint',
npm ERR!   fstream_type: 'Directory',
npm ERR!   fstream_path: '/usr/local/lib/node_modules/jshint',
npm ERR!   fstream_class: 'DirWriter',
npm ERR!   fstream_stack: 
npm ERR!    [ '/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23',
npm ERR!      '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53',
npm ERR!      'Object.oncomplete (fs.js:107:15)' ] }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 13.3.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "jshint"
npm ERR! cwd /Users/davidgoldberg
npm ERR! node -v v0.10.32
npm ERR! npm -v 1.4.28
npm ERR! path /usr/local/lib/node_modules/jshint
npm ERR! fstream_path /usr/local/lib/node_modules/jshint
npm ERR! fstream_type Directory
npm ERR! fstream_class DirWriter
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, mkdir '/usr/local/lib/node_modules/jshint'
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23
npm ERR! fstream_stack /usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/davidgoldberg/npm-debug.log
npm ERR! not ok code 0

---

我很想把错误解决掉。顺便说一句，npm安装jshint工作得很好。最后，我需要帮助下载jshint，以便在sublime tex 3上的Sublimit jshint中使用。

您必须是root才能使用npm进行全局安装，因此请尝试：

---

您是否尝试以管理员身份运行该命令？如果您尝试全局安装，请尝试以root/Administrator身份再次运行该命令。我如何以管理员身份运行？

sudo npm -g install jshint