script to check temperatures of Ubuntu Server and send an email report if specified temperatures exceeded

cpu_temperature_warning.sh

#!/bin/bash

# PURPOSE: Script to check temperatures and report if specified temperatures exceeded
# requires lm-sensors

LOG_FILE="/var/log/CPUWarning.log"
EMAIL_ADDRESS="lockbase@koertner-muth.com"
MAX_TEMP=70

warning=false
for temp in $(sensors -u | grep "temp[0-9]\_input:" | while read -r line; do echo ${line} | cut -f2 -d ' '; done)
do
  temp=${temp%.*}
  if [ ${temp} -ge ${MAX_TEMP} ]
  then
    warning=true
    echo 'Die Temperatur vom HAL Server ist zu hoch, bitte die Schranktür öffnen und ggf. die Lüftersteuerung hochregeln' > ${LOG_FILE}
    echo '============================'                                             >>${LOG_FILE}
    echo $(date)                                                                    >>${LOG_FILE}
    echo ''                                                                         >>${LOG_FILE}
    echo "$(sensors)"                                                               >>${LOG_FILE}
    echo ''                                                                         >>${LOG_FILE}
    echo '============================'                                             >>${LOG_FILE}
  fi
done
if ${warning}
then
    /usr/bin/mail -a "Content-Type: text/plain; charset=UTF-8" -s "[HAL] Der Server wird zu warm!" "$EMAIL_ADDRESS" < ${LOG_FILE}
fi