What this this shell script do? : Please help me understand what does this shell script do:

# main
for HOST in ${HOSTS}
do
  URI=http://${HOST}:80
  count=99
  result=`/opt/splunk/bin/splunk search "index=${INDEX} sourcetype=${SOURCETYPE} SPLUNK_HEALTH_CHECK |stats count" -earliest_time ${EARLIEST} -latest_time ${LATEST} -uri ${URI} -auth ${USER}:${PASS} -preview F -output csv -timeout ${TIMEOUT} 2>&1 |grep -v count |tr -d '\n' |sed 's/"//g'`
  if expr $result : '[0-9]*' > /dev/null 2>&1; then

    count=$result
    result="OK"
  fi
  date +"%Y-%m-%d %T sh=${HOST} status=\"${result}\" delay_status=$count"
done

while calling this script from splunk, i get the following error:

status="Could not look up HOME variable.  Auth tokens cannot be cached.10" delay_status=99