A script to verify if my connection is up and running. Put it to run in your crontab and you can have logs of your broadband internet connection, for example. Call $ check_connection.sh > output.log

check_connection.sh

#!/bin/sh

datetime=`date +%Y-%m-%d\ %H:%M:%S`

my_ip=`curl -s ifconfig.me`
exit_code=$?
if [ $exit_code == 0 ]; then
  echo $datetime [ONLINE] $my_ip
else
  echo $datetime [OFFLINE] Exit code: $exit_code
fi