RPi Email IP On Boot Debian

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Send Email Containing IP Address On Boot

What does it do?

This code will extract the ip address of your Pi and then send an email containing the ip to the specified email address. This is inspired by the need to access the Pi via SSH or other network protocols without a monitor and moving from network to network. This assumes a Gmail SMTP server. You may need to alter a bit for other servers (beyond scope here)

What do you need?

A working, and network enabled Raspberry Pi

What skill level is required?

Medium Level. You should be comfortable navigating a linux system and be comfortable using sudo (if you want to use this script, odds are you are quite comfortable at the command prompt).

Overview of this guide

You need to

  • Create a python script and store it in a Directory
  • Make python script executable
  • Edit /boot/boot.rc

Let's Do It

Create the python script

Copy and paste the following code into a text editor (I'm a nano man myself)

import subprocess
import smtplib
import socket
from email.mime.text import MIMEText
import datetime
# Change to your own account information
to = 'me@example.com'
gmail_user = 'test@gmail.com'
gmail_password = 'yourpassword'
smtpserver = smtplib.SMTP('smtp.gmail.com', 587)
smtpserver.login(gmail_user, gmail_password)
today = datetime.date.today()
# Very Linux Specific
arg='ip route list'
data = p.communicate()
split_data = data[0].split()
ipaddr = split_data[split_data.index('src')+1]
my_ip = 'Your ip is %s' %  ipaddr
msg = MIMEText(my_ip)
msg['Subject'] = 'IP For RaspberryPi on %s' % today.strftime('%b %d %Y')
msg['From'] = gmail_user
msg['To'] = to
smtpserver.sendmail(gmail_user, [to], msg.as_string())

Save this script using a nice name like 'startup_mailer.py' and make note of its path (like /home/pi/Code/startup_mailer.py)

For good measure, make the script executable

sudo chmod +x startup_mailer.py

Edit /boot/boot.rc

Using your text editor once again, edit /boot/boot.rc (this assumes you have already renamed this file to boot.rc If not, see RPi_Advanced_Setup). For example:

sudo nano /boot/boot.rc

Add the following at the end of the file, making changes to the path for your directory tree and save.

#Script to email ip address upon reboot
python /home/pi/Code/startup_mailer.py

Alternative if using Rasbian

If you are using Rasbian you won't have a /boot/boot.rc file. Instead you can edit /etc/rc.local as follows:

 sudo nano /etc/rc.local

Add the python line so the file now looks like this:

 # rc.local
 # This script is executed at the end of each multiuser runlevel.
 # Make sure that the script will "exit 0" on success or any other
 # value on error.
 # In order to enable or disable this script just change the execution
 # bits.
 # By default this script does nothing.
 # Print the IP address if it doesn't work ad sleep 30 before all your code 
 _IP=$(hostname -I) || true
 if [ "$_IP" ]; then
   printf "My IP address is %s\n" "$_IP"
   python /home/pi/Code/startup_mailer.py
 exit 0

Finish up

Reboot your Pi and you should receive an email with your ip address

Trouble shooting

+ you may add (sleep 30) in the etc/rc.local just after the # if you don't get your email notification hang your pi to a monitor and check at bootup if it shows My ip adresss is .... if it doesn't do that! sleep 30. etc/rc.local is linked to etc/init.d/rc.local it's an special service that starts on bootup but it seems there are some bugs in it.

+ If you don't get email when rebooting, you have to check the hostname you currently have. because the script calls for #raspberrypi. Just type in the command line # hostname. if you have an other hostname its simple just change you hostname #with your preferred editor. Also in etc/hosts on the bottom of the page

$ msg['Subject'] = 'IP For YOUR HOSTNAME on %s' % today.strftime('%b %d %Y')