fs/skeleton/bin/diskperf

#!/bin/sh

if [ -e /sys/block/sda/stat ]; then
  interval=$1
  if [ -z "$interval" ]; then
    interval=15
  fi

  while :; do
    read line </sys/block/sda/stat
    echo "$line"
    sleep "$interval"
  done
else
  while :; do sleep 1000000; done
fi