#!/bin/sh
bytes=1024
url="http://www.random.org/integers/?num=${bytes}&min=0&max=255&col=4&base=16&format=plain&md=new"
sudo=sudo

[ $(id -u) = 0 ] && sudo=;
wget -o /dev/null -O -  "$url" | sed -e 's/\t//g' | xxd -r -p |
  $sudo dd of=/dev/random