http://pulse7.net/django/start-django-automatically-when-restart-system-server-in-linux/

start dev server on reboot

#!/bin/bash
clear
cd /path/to your/virtual environment  #path to your virtual environment
. bin/activate  #Activate your virtual environment
cd /path/to your/project directory  #After that go to your project directory
python manage.py runserver  #run django server

After that save this file with .sh extension. I have saved this file as script.sh in the following example.

Run following command in terminal for giving execution permission to your script
$ chmod u+x script.sh

4. To test your script works perfectly, add following command in terminal
$ ./ script.sh

5. After that, you have to create cron job on your machine for run script automatically on reboot give following command in terminal
$ crontab -e

Above command will open crontab window, then add the following line in it:

@reboot path/to/script.sh