title: How to append to the PATH variable in Visual studio 2013
body: <p>I want to append a value to my PATH environment variable. I thought this should be easy but its not working in the Developer Command Prompt for VS2013. I have tried the following commands:  </p>
  
  <pre><code>set PATH = C:\temp;%PATH% //No quotes
  set "PATH = C:\temp;%PATH%" //Quotes around everything
  set PATH = "C:\temp;%PATH%" //Quotes only around the value
  set PATH = "C:\temp;"%PATH% //Quotes around the new value to be appended  
  </code></pre>
  
  <p>I have looked online and everyone seems to suggest the first or the second option above but when I  </p>
  
  <pre><code>echo %PATH%  
  </code></pre>
  
  <p>I dont see C:\temp in the PATH variable.  </p>
  
  <p>Any help is appreciated. I am on windows 7 and I work in python but needed to install quantslib. So, I have to go through visual studio.</p>