checkWxBatt.sh

#!/bin/bash
# check the weather station's battery by screen-scraping the WeeWX main page
# and send a status email

WX_URL="http://pi4.local/weather"
MAIL="/home/rob/.local/bin/cransend.sh"
EMAIL_TO="[email protected]"
TEMP_FILE="/tmp/checkWxBatt.html"


wget --quiet $WX_URL --output-document=$TEMP_FILE
if [ $? -ne 0 ]; then
  logger -s "$0: Cannot reach weather station at $WX_URL"
  echo "Cannot reach weather station at $WX_URL" | $MAIL -s "Weather station unresponsive" $EMAIL_TO
  exit 1
  fi

RESULT="`grep Transmitter -A 1 $TEMP_FILE | awk -F '[<>]' '{print $5}' | tr -d '\n'`"
# echo "!$RESULT!"

DATE=`date`

if [ "$RESULT" = "OK" ]; then
    logger -s "Battery is OK."
    echo "Weather station battery is OK on $DATE" | $MAIL -s "Weather station battery OK" $EMAIL_TO
else
    logger -s "Battery is low!"
    echo "Weather station battery is low on $DATE" | $MAIL -s "Weather station battery low" $EMAIL_TO
fi

rm $TEMP_FILE