ping every 30 sec and store result in a file, used to diagnose internet connection

pingstats.sh

#!/bin/bash
FILE=$(echo pingstats-$(date '+%Y-%m-%d-%H-%M').csv)
echo "datetime,min,avg,max,stddev" > ${FILE}

while true
do
  NOW=$(date -u +"%Y-%m-%d %H:%M:%S")
  # retrieve data from ping: min,avg,max,stddev
  VALUES=$(ping -c 4 steren.fr | tail -1 | awk '{print $4}' | sed 's/\//,/g')
  echo "${NOW},${VALUES}" >> ${FILE}
  sleep 30
done