title: Installing R packages available for all users
body: <p>I have a few R packages installed under <code>~/R/i486-pc-linux-gnu-library/2.11</code>. </p>
  
  <p>I would like to make them, and any other R package I install from now on, available to all R users. I don't mind re-installing the packages I already have in a neutral place (they are just a few). So how do I do that?</p>