Hello there!,
This sounds interesting! A simple idea, but interesting! I, myself, don't know a lot about crons, but its just a matter of looking at the docs and star picking option by option.
Relevant Skills and Experience
I have a good use of JS, and also the will to look up at the doca for the distro you prefer (in case that the command changes between distros) and give you something that will make you happy :P