I am sorry if my question is silly and not at the right place.
I know it s possible to write a script (in any programming language) that would check some webpage every 20 minutes, record its HTML code (source) and store it in some file. I also it s also possible to run it from my computer.
But what if I can t keep my computer on all the time? Do you think it s possible to upload this script to some free web server and run it from there all the time?