title: i have error install angular and npm package
body: <p>I delete the old version of angular and trying to install a new one after update Nodejs and get this error 
  this error appears when trying to install angular</p>
  
  <p><a href="https://i.stack.imgur.com/M5VOc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M5VOc.png" alt="ng install"></a></p>
  
  <p>i trying to resolve by this steps and get different error </p>
  
  <p>1) npm cache verify (If not running, add --force)
  2) npm uninstall -g @angular/cli
  3) check node --version  and ng --version
  4) npm i -g @angular/cli@latest
  5)  npm install --save-dev @angular/cli@latest
  5) Delete node_modules and run npm install
  6) Kill all instances of terminal</p>
  
  <p>error : </p>
  
  <pre><code>admins-MacBook-Pro:~ admin$ sudo npm i -g @angular/cli@latest
  npm ERR! path /usr/local/bin/ng
  npm ERR! code EEXIST
  npm ERR! Refusing to delete /usr/local/bin/ng: ../lib/node_modules/angular-cli/bin/ng symlink target is not controlled by npm /usr/local/bin
  npm ERR! File exists: /usr/local/bin/ng
  npm ERR! Move it away, and try again.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     /Users/admin/.npm/_logs/2019-08-01T03_26_03_978Z-debug.log
  admins-MacBook-Pro:~ admin$ npm install
  npm WARN saveError ENOENT: no such file or directory, open '/Users/admin/package.json'
  npm WARN enoent ENOENT: no such file or directory, open '/Users/admin/package.json'
  npm WARN admin No description
  npm WARN admin No repository field.
  npm WARN admin No README data
  npm WARN admin No license field.
  
  up to date in 1.274s
  found 0 vulnerabilities
  
  admins-MacBook-Pro:~ admin$ sudo npm install
  npm WARN saveError ENOENT: no such file or directory, open '/Users/admin/package.json'
  npm WARN enoent ENOENT: no such file or directory, open '/Users/admin/package.json'
  npm WARN admin No description
  npm WARN admin No repository field.
  npm WARN admin No README data
  npm WARN admin No license field.
  
  up to date in 1.199s
  found 0 vulnerabilities
  </code></pre>