https://adventofcode.com

Programmatically retrieving a day's input file

Input is randomized for each user, so you need to be authenticated using your session cookie.

1. Find session cookie on AoC site after logging in under Chrome Developer Tools -> Application -> Cookies.

2. Create a file called .session with contents:

   session=YOUR_SESSION_COOKIE

3. Run the following to programmatically retrieve the day's input:

   curl -b "$(cat .session)" -o dayXX_input.txt https://adventofcode.com/20XX/day/XX/input