check internet connectivity

check_connectivity.sh

#!/bin/bash
# check internet connectivity
# i use it to check and log every the connection
# just add a cron job with crontab -e
# * * * * * ~/check_connectivity.sh >> ~/check_connectivity.log

DATE=`date '+%Y-%m-%d %H:%M:%S'`

if ping -q -c 1 -W 1 8.8.8.8 >/dev/null; then
  echo "$DATE - IPv4 is up"
else
  echo "$DATE - IPv4 is down"
fi

if nc -zw1 google.com 443; then
  echo "$DATE - We have connectivity to google.com."
else
  echo "$DATE - No connection to google.com possible."
fi