set >nl 2>nl t_cnt 0
while eval >nl 0
do
  if eval >nl `echo $d_runtime` t_cnt \<=
  then      
    sleep 1
    eval >nl t_cnt t_cnt 1 + =
  else
    set >nl 2>nl s_flag 1
    sleep 1
    echo "Test time has expired..."
    break
  fi
done
clear 2>nl >nl t_cnt
