### getR4D.sh
### bash getR4D.sh <fiename>
###   <filename> must be a text file containing
###   rainfall as recorded by TestRainGuage04.py
### prints the number of mm of rain that fell

daDayRainTotal=0

while read -r line
do
    
    daEpochTime=$(echo $line | sed -e "s/,.*$//")
    date=$(date -d @$daEpochTime | sed -e "s/\ *SAST.*$//")
    daHour=$(date -d @$daEpochTime | sed -e "s/^.*202..//" | sed -e "s/:.*$//")
    
    daRain=$(echo $line | sed -e "s/^.*,\ //")
    temp=$(expr $daRain+$daDayRainTotal | bc)
    daDayRainTotal=$temp
    
done < $1

echo $daDayRainTotal