#!/bin/sh

date >> /tmp/apm.txt
echo "$*" >> /tmp/apm.txt

case "$*" in
'start'|'change power')
  A=`apm|grep on-line`
  if [ "$A" = "" ]; then
    echo "Battery" >> /tmp/apm.txt
    hdparm -S12 /dev/hda 1> /dev/null 2> /dev/null
  else
    echo "AC" >> /tmp/apm.txt
    hdparm -S60 /dev/hda 1> /dev/null 2> /dev/null
  fi
;;
esac