title: history search backward in R
body: <p>Normally in my machine I can search R's history backwards by typing the desired first characters of the command I want to backward-search and then use the PageUp or PageDown keys to go through all the entries in the R history.</p>
  
  <p>I am working as a guest in a remote cluster now and this option is not available in this machine. </p>
  
  <p>Does anyone have an idea of where can I add this function to R?</p>
  
  <p>EDIT: I am interested on key bindings rather than how to reproduce this function.</p>
  
  <p>EDIT2: I am locally on a Fedora 16 machine; remotely CentOS release 5.3 (Final)</p>