RPi3 Auto Email New Public IP If Changed (Python3)

Step

1. Use wget to download IP-Reporting script

   sudo wget https://raw.github.com/carry0987/Raspberry-Pi-Repo/master/Auto-Report-IP/report-ip.py

   
2. Give the script executing permission

   sudo chmod +x report-ip.py

   
3. Enter your gmail address, password and receiver email address to the script

   sudo vim report-ip.py

   Note : If your gmail have set Two-Step Verification, you should follow the step to get token:

   1. Log-in into Gmail with your account

   2. Navigate to https://security.google.com/settings/security/apppasswords

   3. In 'select app' choose 'custom', give it an arbitrary name and press generate

   4. It will give you 16 chars token

   5. Use the token as password with your Gmail account and two factor authentication will not be required.

4. Move report-ip.py to usr folder

   sudo mv report-ip.py /usr/local/bin

   
5. Create a systemd service to make the script will auto be run on boot It can auto check the network connection make sure the network is online so that it can send the email

   sudo vim /etc/systemd/system/report-ip.service

   
6. Put the following script into the report-ip.service,then save and exit

   [Unit]
   Description=IP Reporter
   After=network-online.target
   Wants=network-online.target
   
   [Service]
   ExecStart=/usr/bin/python3 /usr/local/bin/report-ip.py
   
   [Install]
   WantedBy=multi-user.target

   
7. Enable the service

   sudo systemctl enable report-ip

   
8. Start the service

   sudo systemctl start report-ip

   
9. Use systemctl to check the status of the service

   sudo systemctl status report-ip

   
10. Now edit crontab to make the script run every minutes

    sudo vim /etc/crontab

    
11. Add the following script on the bottom, then save and exit

    * * * * * root /usr/bin/python3 /usr/local/bin/report-ip.py

    
12. Restart cron service

    sudo service cron restart

    
13. Finish