get_tellstick_value

#!/bin/bash
# return the value for the ID in the first argument. The second argument indicates what to
# return. I.e Temperature (temp) or humidity (humid)

IdIn=$1
What=$2

usage()
{
	echo "Usage: $0 <Id> [humid | temp]"
	exit 1
} 


if [ $# -ne 2 ] || [ -z "$IdIn" ] || [ -z "$What" ]; then
	usage
	exit 1
fi

while IFS=" " read Type Id RestOfLine 
  do
#     echo "Type=$Type"
#     echo "id=$Id"
     if [ "$Type" = "temperaturehumidity" ]; then
	read  Temperature  Humidity Date Time < <(echo $RestOfLine)
	if [ "$What" == "humid" -a "$IdIn" == "$Id" ]; then
		echo $Humidity
		exit 0
	fi
        if [ "$What" == "temp" -a "$IdIn" == "$Id" ]; then
                echo $Temperature
                exit 0
        fi
     fi
     if [ "$Type" = "temperature" ]; then
        read  Temperature Date Time < <(echo $RestOfLine)
        if [ "$What" == "temp" -a "$IdIn" == "$Id" ]; then
                echo $Temperature
                exit 0
        fi
     fi
  done < <(tdtool -l | egrep -e "mandolyn|fineoffset" | awk '{print $2,$3,$4,$5,$6,$7}' | sed -e 's#\xb0###' -e 's#\xc2###' -e 's#%###')
 exit 1