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nisargshah95/send-new-ip.sh

Created July 10, 2018 18:26
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Send an email whenever public IP address changes
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send-new-ip.sh
# The script sends an email with updated IP address
# whenever there is an IP change from ISP
MSG="To: myemail@gmail.com\nFrom: myemail@gmail.com\nSubject: New IP\n"
IP_FILE=/home/nisarg/ip-address.txt
IP=$(/usr/bin/dig +short myip.opendns.com @resolver1.opendns.com)
OLD_IP=$(cat $IP_FILE)
if [ "$IP" != "$OLD_IP" ]; then
echo $IP > $IP_FILE # save new IP to file
MSG="$MSG\n$IP\n" # add IP to message body
echo -e $MSG | /usr/sbin/ssmtp myemail@gmail.com
fi
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Related blog post - https://forkedprocess.wordpress.com/2018/04/23/connecting-remotely-via-ssh-vnc/

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