title: Specifiy version of R to run when running a script from bash
body: <p>I am trying to run an R script from a bash script using the <code>Rscript</code> command. The cluster I am on has multiple versions of R, and is telling me: "Error: This is R version 2.15.1. Package 'raster' requires >= 3.0.0. Is there a way to specify the version of R to run <code>Rscript</code> with?</p>
  
  <pre><code>#!/bin/sh
  Rscript Test.R
  </code></pre>