Make an automated script under debian

Hello, I'm looking for someone to make what I manually do into an automated script to fetch unique M3U links from a certain website. I need it automated since the link keep changing so the script have to check validity and fix redo the correct command with the updated link. What I do is, Inspect the page Run the stream Grab the M3U link Use a command to restream it to a custom HTTP Port (got already an application for it) - What you need to do is make all this automated in linux with a check/update of the M3U link.