您可以简单地更改所有者，或者在执行这样的命令之前使用sudo

sudo chown -R [owner]:[owner] /usr/local/lib/node_modules(更改owner)

or

sudo npm install -g json-server

就是这样。

对于linux / ubuntu如果命令

NPM install -g <package_name>

npm WARN deprecated superagent@4.1.0: Please note that v5.0.1+ of superagent removes User-Agent header by default, therefore you may need to add it yourself (e.g. GitHub blocks requests without a User-Agent header).  This notice will go away with v5.0.2+ once it is released.

npm ERR! path ../lib/node_modules/<package_name>/bin/..

npm ERR! code EACCES

npm ERR! errno -13

npm ERR! syscall symlink

npm ERR! Error: EACCES: permission denied, symlink '../lib/node_modules
/<package_name>/bin/..' -> '/usr/local/bin/<package_name>'

npm ERR!  { [Error: EACCES: permission denied, symlink '../lib/node_modules/<package_name>/bin/..' -> '/usr/local/bin/<package_name>']

npm ERR!   cause:
npm ERR!    { Error: EACCES: permission denied, symlink '../lib/node_modules/<package_name>/bin/..' -> '/usr/local/bin/<package_name>'

npm ERR!      errno: -13,

npm ERR!      code: 'EACCES',

npm ERR!      syscall: 'symlink',

npm ERR!      path: '../lib/node_modules/<package_name>/bin/..',
npm ERR!      dest: '/usr/local/bin/ionic' },

npm ERR!   stack:
npm ERR!    'Error: EACCES: permission denied, symlink \'../lib/node_modules/ionic/bin/ionic\' -> \'/usr/local/bin/ionic\'',

npm ERR!   errno: -13,

npm ERR!   code: 'EACCES',

npm ERR!   syscall: 'symlink',

npm ERR!   path: '../lib/node_modules/<package-name>/bin/<package-name>',

npm ERR!   dest: '/usr/local/bin/<package-name>' }

npm ERR! 

npm ERR! The operation was rejected by your operating system.

npm ERR! It is likely you do not have the permissions to access this file as the current user

npm ERR! 

npm ERR! If you believe this might be a permissions issue, please double-check the

npm ERR! permissions of the file and its containing directories, or try running

npm ERR! the command again as root/Administrator (though this is not recommended).


npm ERR! A complete log of this run can be found in:

npm ERR!     /home/User/.npm/_logs/2019-07-29T01_20_10_566Z-debug.log

修复:安装与根权限

Sudo NPM install <package_name> -g

你所需要做的就是将USER添加到/local/lib的所有者

sudo chown -R $USER /usr/local/lib

编辑:

要精确地定位并只定位node_modules文件夹，请在使用前一个命令之前尝试使用这个命令:

sudo chown -R $USER /usr/local/lib/node_modules

我得到了同样的错误，并解决它使用命令

Sudo NPM install -g expo-cli——unsafe-perm

在运行命令后的图像中

然后执行以下命令更新NPM

NPM install -g npm@latest

我很容易就解决了这个问题。

在我的mac上安装Ionic时也出现了类似的问题。

我运行命令 sudo chown -R $USER /usr/local/ path你可以更新为错误给出的路径。

经过长期的研究，我明白了在mac OS中安装angular cli不需要什么，只需使用sudo npm install -g @angular/cli，你的终端会提示密码，输入你的密码，然后继续安装cli。这对我很管用。