wx_underground_average.sh

wx_underground_average.sh

#!/bin/bash
# Use this to pull in up to 5 weather stations and grep the temp reading from them.  Average only the ones
# that you get dater back from and then dump that to a file.  Use Conky to read it or dump it to a db
#
#Change the station id's to valid stations in your area

wAvg=0
wSum=0
n=0
weatherA=0
weatherB=0
weatherC=0
weatherD=0
weatherE=0

weatherA=$(/usr/bin/curl -s "http://stationdata.wunderground.com/cgi-bin/stationlookup?station=station1" | grep -m 1 -o "tempf val=\"[^\"]*\"" | grep -o "\"[^\"]*\." | sed "s/\"//g;s/\.//g")
weatherB=$(/usr/bin/curl -s "http://stationdata.wunderground.com/cgi-bin/stationlookup?station=station2" | grep -m 1 -o "tempf val=\"[^\"]*\"" | grep -o "\"[^\"]*\." | sed "s/\"//g;s/\.//g")
weatherC=$(/usr/bin/curl -s "http://stationdata.wunderground.com/cgi-bin/stationlookup?station=station3" | grep -m 1 -o "tempf val=\"[^\"]*\"" | grep -o "\"[^\"]*\." | sed "s/\"//g;s/\.//g")
weatherD=$(/usr/bin/curl -s "http://stationdata.wunderground.com/cgi-bin/stationlookup?station=station4" | grep -m 1 -o "tempf val=\"[^\"]*\"" | grep -o "\"[^\"]*\." | sed "s/\"//g;s/\.//g")
weatherE=$(/usr/bin/curl -s "http://stationdata.wunderground.com/cgi-bin/stationlookup?station=station5" | grep -m 1 -o "tempf val=\"[^\"]*\"" | grep -o "\"[^\"]*\." | sed "s/\"//g;s/\.//g")

declare -a weather=($weatherA $weatherB $weatherC $weatherD $weatherE)

n=0
for station in "${weather[@]}"; do
   if [ ! -z "$station" ]; then
        ((wSum+=$station))
        ((n++))
   fi
done

let "wAvg = $wSum/$n"

echo $wAvg > ~/wxtemp