title: remove anaconda R from Ubuntu
body: <p>I have been using ipython notebook to run some R scripts. Now the problem is I have two R versions on my Ubuntu 14.04.
  One is <code>R.3.2.2</code> at <code>/home/MYNAME/anaconda2/bin/R</code>,  another one is the R which I need for R studio, 
  now the problem is I want to only use <code>R.3.3.1</code> for my system as I need some advanced task to be done.</p>
  
  <p>I use <code>conda uninstall r</code>, after running this, according to the print out, a lot of R related packages is removed, if i run <code>conda uninstall r</code> again, it said </p>
  
  <pre><code>Fetching package metadata .......
  Using Anaconda Cloud api site https://api.anaconda.org
  Solving package specifications: ..........
  Error: no packages found to remove from environment: /home/MyName/anaconda2
  </code></pre>
  
  <p>but when I run <code>Which R</code> again, still it is the anaconda R, if I run <code>R</code> in the terminal, it is still <code>R3.2.2</code>, anyone knows how could I remove this anaconda R version?</p>