Сбор статистики SMART

#!/bin/sh

EMAIL="admin@srv-home.local"
DEVICES="/dev/ad4 /dev/ad6"
SMARTCTL=`whereis smartctl | awk '{print $2}'`

if [ -z "${DEVICES}" ]; then
  echo '$DEVICES is empty'
elif [ ! -x "${SMARTCTL}" ]; then
  echo "smartctl not found"
else
  if [ -f /tmp/daily.sendsmart ]; then
    rm -f /tmp/daily.sendsmart
  fi

  for devs in $DEVICES; do
    touch /tmp/daily.sendsmart
    $SMARTCTL -a $devs > /tmp/daily.sendsmart
    cat /tmp/daily.sendsmart | mail -s "S.M.A.R.T. $devs" $EMAIL
    rm -f /tmp/daily.sendsmart
    sleep 10
  done
fi