This task turned out to be really simple to me. I installed Ubuntu in my computer last semester and I used it for my Semestre i project.
What there was left to do was to set a Node server and the Crontab Files part.
I added a simple server.js file:
To do the Crontab, I only had to follow the steps in the link provided by Ken.
As expected, I didn’t have any file yet. So I used nano to add the ones in the example:
The crontab was succesfully installed.