RTLAMR for Meter reading

#!/bin/bash


trap "exit" INT TERM ERR
trap "kill 0" EXIT

/usr/local/bin/rtl_tcp &

sleep 10

WATERMETER=`/etc/tools/rtlamr/rtlamr -msgtype=r900 -filterid=8675309 -single=true -format=csv -duration=5m | cut -d ',' -f8 | sed 's/.$/.&/'`

sleep 5

if ! [ -z "$WATERMETER" ]
then
curl -i -XPOST 'http://localhost:8086/write?db=rtlamr' --data-binary "usage,host=water value=$WATERMETER" &>/dev/null
fi




GASMETER=`/etc/tools/rtlamr/rtlamr -msgtype=scm+ -filterid=1234567890 -single=true -format=csv -duration=5m | cut -d ',' -f8`

sleep 5

if ! [ -z "$GASMETER" ]
then
curl -i -XPOST 'http://localhost:8086/write?db=rtlamr' --data-binary "usage,host=gas value=$GASMETER" &>/dev/null

fi


sleep 10
kill $!