config_uptime() {
  echo "graph_title Uptime"
  echo "graph_args --base 1000 -l 0 "
  echo "graph_vlabel uptime in days"
  echo "graph_category system"
  echo "uptime.label uptime"
  echo "uptime.draw AREA"
}
fetch_uptime() {
  awk '{printf "uptime.value %.2f",$1/86400; print ""}' /proc/uptime
}