title: Rails working in specific terminal only
body: <p>I have installed rails in ubuntu its working fine in the terminal which i installed, once i close the terminal and open it again and when i check for <code>rails -v</code>  am getting following error. Again i tried installing it but no luck same thing repeated again. </p>
  
  <p><a href="http://railsapps.github.io/installing-rails.html" rel="nofollow">This is the installation link i followed</a></p>
  
  <pre><code>The program 'rails' can be found in the following packages:
   * rails
   * ruby-railties-3.2
  Try: sudo apt-get install &lt;selected package&gt;
  </code></pre>
  
  <p>checked for <code>ruby -v</code></p>
  
  <pre><code>The program 'ruby' can be found in the following packages:
   * ruby1.8
   * ruby1.9.1
  Try: apt-get install &lt;selected package&gt;
  </code></pre>
  
  <p>and also for <code>gem list rails</code></p>
  
  <pre><code>The program 'gem' can be found in the following packages:
   * ruby1.9.1
   * rubygems
  Try: apt-get install &lt;selected package&gt;
  </code></pre>