This Python script checks for updates in a HTTP file by doing an HTTP HEAD request, so it doesn't need to download the entire file to check the last-updated HTTP header.
The check will be performed every 60 seconds by default.
Once there is a change this programs sends an email notifying the update.
pip install dotenv
pip install sendgrid
pip install pytz
Enviromental variables should be stored in a file called .env that should look as follows:
export SENDGRID_API_KEY='sendgrid_api_key'
export SENDGRID_FROM_EMAIL='[email protected]'
export SENDGRID_TO_EMAIL='[email protected]'
python check_updates.py "https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/678x678.jpg"