npm安装-g less不工作：eAcces：拒绝权限

Question

npm install -g less

☁  ~  npm install -g less
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/mkdirp/0.5.1'
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/graceful-fs/3.0.8'
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/extend/3.0.0'
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/readable-stream/2.0.4'
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/chalk/1.1.1'
npm WARN install Couldn't install optional dependency: EACCES: permission denied, mkdir '/Users/brentscholl/.npm/xtend/4.0.1'
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
/usr/local/lib
└─┬ less@2.5.3
  ├─┬ errno@0.1.4
  │ └── prr@0.0.0
  ├── image-size@0.3.5
  ├── mime@1.3.4
  ├─┬ promise@6.1.0
  │ └── asap@1.0.0
  └─┬ source-map@0.4.4
    └── amdefine@1.0.0

npm ERR! Darwin 15.0.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "less"
npm ERR! node v5.0.0
npm ERR! npm  v3.3.6
npm ERR! path /usr/local/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access

npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
npm ERR!     at Error (native)
npm ERR!  { [Error: EACCES: permission denied, access '/usr/local/lib/node_modules']
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/local/lib/node_modules' }
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/brentscholl/npm-debug.log

Answer 1

不建议使用sudo。以后可能会给你权限问题。虽然上面的工作，我不是一个球迷改变文件夹由root拥有的用户可写，尽管这可能是一个问题，多个用户。为了解决这一问题，您可以使用一个带有“NPM用户”的组，但这也会增加管理开销。有关处理文档中权限的选项，请参阅此处：https://docs.npmjs.com/getting-started/fixing-npm-permissions

我倾向于选择2：

为了最小化权限错误的机会，您可以将npm配置为使用不同的目录。在本例中，它将是主文件夹上的一个隐藏目录。

 mkdir ~/.npm-global

 npm config set prefix '~/.npm-global'

 export PATH=~/.npm-global/bin:$PATH

回到命令行，更新系统html" target="_blank">变量：

 source ~/.profile

测试：在不使用sudo的情况下全局下载一个包。

npm install -g jshint

如果仍然显示权限错误运行（mac os）：

sudo chown -R $USER ~/.npm-global   

sudo apt-get install nodejs npm