Rudy

#!/bin/bash

if [ $# -ne 1 ]
then
  echo "Usage: `basename $0` (seconds)"
  exit 65;
fi

if [[ $1 =~ ^[0-9]+$ ]]; then
  CNT=$1
  while [ $CNT -gt 0 ]; do
    printf "Sleeping in $CNT seconds (press Ctrl-C to abort)... \r"
    let CNT=CNT-1
    sleep 1
  done
  printf "\r\n";
  xset dpms force off
  exit 0
else
  echo "Usage: `basename $0` (seconds)"
  exit 1;
fi