Raspberry Pi GPS Radio Power Meter

#!/bin/bash

dir=/home/pi/output/
mkdir -p "$dir"

output="${dir}$(date +%s)"


rtl_power -f 314M:316M:1M -g 300 -i 1 |while read l
do
  echo "$(date +%s) - POWER - $l" >> "${output}_1"
done &


cat /dev/ttyS0|while read g
do
  echo "$(date +%s) - $g" >> "${output}_2"
done &

echo "press enter to continue"
read

killall rtl_power
ps aux|grep ttyS0|awk '{print $2}'|while read pid
do
  kill $pid
done

cat ${output}_1 ${output}_2 > ${output}_3
sort ${output}_3 > ${output}

rm ${output}_*

echo "Thank you and have a nice day."