title: Problem Installing Ruby 1.9.2 alone in ubuntu
body: <p>I have pre installed ruby 1.8.7 available in my ubuntu pc. Since i am going to start my development in ruby 1.9.2, i have uninstalled ruby 1.8.7 and installed the fresh copy of the 1.9.2 using the following command.</p>
  
  <pre><code>  sudo apt-get install ruby1.9.2
  </code></pre>
  
  <p>It is installed successfully. But i cant able to bring the REPL (irb) to the shell. I am new to both linux and ruby. Can someone clarify me what should i do next?</p>
  
  <p>And i know we can do this simply in RVM. Since i am going to work on only the 1.9.2 version, its not required.</p>