在Ubuntu全局安装express报错：Error: EACCES, mkdir '/usr/lib/node_modules/express'的解决办法

$ npm install -g express
npm ERR! Error: EACCES, mkdir '/usr/lib/node_modules/express'
npm ERR!  { [Error: EACCES, mkdir '/usr/lib/node_modules/express']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/lib/node_modules/express',
npm ERR!   fstream_type: 'Directory',
npm ERR!   fstream_path: '/usr/lib/node_modules/express',
npm ERR!   fstream_class: 'DirWriter',
npm ERR!   fstream_stack: 
npm ERR!    [ '/usr/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23',
npm ERR!      '/usr/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53',
npm ERR!      'Object.oncomplete (fs.js:108:15)' ] }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Linux 4.4.0-31-generic
npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "-g" "express"
npm ERR! cwd /home/zmj97
npm ERR! node -v v0.10.37
npm ERR! npm -v 1.4.28
npm ERR! path /usr/lib/node_modules/express
npm ERR! fstream_path /usr/lib/node_modules/express
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/lib/node_modules/express'
npm ERR! fstream_stack /usr/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23
npm ERR! fstream_stack /usr/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53
npm ERR! fstream_stack Object.oncomplete (fs.js:108:15)
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/zmj97/npm-debug.log
npm ERR! not ok code 0

在全局安装时报错，提示“Please try running this command again as root/Administrator.”，

加上sudo即可。

$ sudo npm install -g express
[sudo] password for zmj97: 
express@4.14.0 /usr/lib/node_modules/express
├── escape-html@1.0.3
├── array-flatten@1.1.1
├── utils-merge@1.0.0
├── cookie-signature@1.0.6
├── merge-descriptors@1.0.1
├── fresh@0.3.0
├── methods@1.1.2
├── path-to-regexp@0.1.7
├── vary@1.1.0
├── encodeurl@1.0.1
├── range-parser@1.2.0
├── parseurl@1.3.1
├── etag@1.7.0
├── content-type@1.0.2
├── cookie@0.3.1
├── content-disposition@0.5.1
├── serve-static@1.11.1
├── depd@1.1.0
├── qs@6.2.0
├── on-finished@2.3.0 (ee-first@1.1.1)
├── debug@2.2.0 (ms@0.7.1)
├── finalhandler@0.5.0 (unpipe@1.0.0, statuses@1.3.1)
├── proxy-addr@1.1.2 (forwarded@0.1.0, ipaddr.js@1.1.1)
├── type-is@1.6.14 (media-typer@0.3.0, mime-types@2.1.13)
├── accepts@1.3.3 (negotiator@0.6.1, mime-types@2.1.13)
└── send@0.14.1 (destroy@1.0.4, ms@0.7.1, mime@1.3.4, statuses@1.3.1, http-errors@1.5.1)

安装成功！

查看已安装包中包括express：

$ npm ls -g
/usr/lib
├─┬ express@4.14.0
│ ├─┬ accepts@1.3.3
│ │ ├─┬ mime-types@2.1.13
│ │ │ └── mime-db@1.25.0
│ │ └── negotiator@0.6.1
│ ├── array-flatten@1.1.1
│ ├── content-disposition@0.5.1
│ ├── content-type@1.0.2
│ ├── cookie@0.3.1
│ ├── cookie-signature@1.0.6
│ ├─┬ debug@2.2.0
│ │ └── ms@0.7.1
│ ├── depd@1.1.0
│ ├── encodeurl@1.0.1
│ ├── escape-html@1.0.3
│ ├── etag@1.7.0
│ ├─┬ finalhandler@0.5.0
│ │ ├── statuses@1.3.1
│ │ └── unpipe@1.0.0
│ ├── fresh@0.3.0
│ ├── merge-descriptors@1.0.1
│ ├── methods@1.1.2
│ ├─┬ on-finished@2.3.0
│ │ └── ee-first@1.1.1
│ ├── parseurl@1.3.1
│ ├── path-to-regexp@0.1.7
│ ├─┬ proxy-addr@1.1.2
│ │ ├── forwarded@0.1.0
│ │ └── ipaddr.js@1.1.1
│ ├── qs@6.2.0
│ ├── range-parser@1.2.0
│ ├─┬ send@0.14.1
│ │ ├── destroy@1.0.4
│ │ ├─┬ http-errors@1.5.1
│ │ │ ├── inherits@2.0.3
│ │ │ └── setprototypeof@1.0.2
│ │ ├── mime@1.3.4
│ │ ├── ms@0.7.1
│ │ └── statuses@1.3.1
│ ├── serve-static@1.11.1
│ ├─┬ type-is@1.6.14
│ │ ├── media-typer@0.3.0
│ │ └─┬ mime-types@2.1.13
│ │   └── mime-db@1.25.0
│ ├── utils-merge@1.0.0
│ └── vary@1.1.0