title: When uninstalling Angular CLI (@angular/cli) the angular version is still 6.2.0
body: <p>I'm trying to update my angular-cli version to the latest, and for that I'm doing:</p>
  
  <pre><code>npm uninstall -g @angular/cli
  npm cache verify
  </code></pre>
  
  <p>After that, I closed and opened again the terminal and typed in an empty folder:</p>
  
  <pre><code>ng -v 
  </code></pre>
  
  <p>and the output was: 6.2.0</p>
  
  <p>I also tried to install the latest version of angular with:</p>
  
  <pre><code>npm install -g @angular/cli@latest
  </code></pre>
  
  <p>and then executing</p>
  
  <pre><code>ng new my-app
  </code></pre>
  
  <p>but the next error showed:</p>
  
  <pre><code>npm ERR! path /home/&lt;path&gt;/package.json
  npm ERR! code ENOENT
  npm ERR! errno -2
  npm ERR! syscall open
  npm ERR! enoent ENOENT: no such file or directory, open '/home/raul/&lt;path&gt;/package.json'
  npm ERR! enoent This is related to npm not being able to find a file.
  npm ERR! enoent 
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     /home/&lt;my_name&gt;/.npm/_logs/2018-11-09T23_58_11_085Z-debug.log
  </code></pre>
  
  <p>And inside that log I have:</p>
  
  <pre><code>0 info it worked if it ends with ok
  1 verbose cli [ '/usr/bin/node',
  1 verbose cli   '/usr/local/bin/npm',
  1 verbose cli   'run',
  1 verbose cli   'ng',
  1 verbose cli   'new',
  1 verbose cli   'my-app' ]
  2 info using npm@6.2.0
  3 info using node@v10.13.0
  4 verbose stack Error: ENOENT: no such file or directory, open '/home/&lt;path&gt;r/package.json'
  5 verbose cwd /home/&lt;path&gt;
  6 verbose Linux 4.15.0-38-generic
  7 verbose argv "/usr/bin/node" "/usr/local/bin/npm" "run" "ng" "new" "my-app"
  8 verbose node v10.13.0
  9 verbose npm  v6.2.0
  10 error path /home/&lt;path&gt;/package.json
  11 error code ENOENT
  12 error errno -2
  13 error syscall open
  14 error enoent ENOENT: no such file or directory, open '/home&lt;path&gt;/package.json'
  15 error enoent This is related to npm not being able to find a file.
  16 verbose exit [ -2, true ]
  </code></pre>
  
  <p>I also tried doing "ng serve" on an existing project and it worked fine.</p>