【nodejs】常见坑 - 安装 express

在mac上使用npm install -g express 安装express的时候出现如下类似的错误：

代码语言：javascript复制

npm ERR! tar.unpack untar error /Users/imaginexie/.npm/express/4.13.4/package.tgz
npm ERR! Darwin 14.5.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "express"
npm ERR! node v0.12.3
npm ERR! npm  v2.9.1
npm ERR! path /usr/local/lib/node_modules/express
npm ERR! code EACCES
npm ERR! errno -13

npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/express'
npm ERR!     at Error (native)
npm ERR!  { [Error: EACCES, mkdir '/usr/local/lib/node_modules/express']
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/local/lib/node_modules/express',
npm ERR!   fstream_type: 'Directory',
npm ERR!   fstream_path: '/usr/local/lib/node_modules/express',
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!      'FSReqWrap.oncomplete (fs.js:95:15)' ] }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/imaginexie/npm-debug.log

在错误代码中有"Please try running this command again as root/Administrator."的说明，那么你需要使用超级管理员的身份来安装。即：

代码语言：javascript复制

sudo npm install -g express

express npm error fstream local

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