This is something that doesn’t really make much of a difference, but if you’re not worried about screen burn then you may as well do this.

When the console has been idle for a certain amount of time, it goes black, only to come back when a key is pressed. To prevent this, use these commands:

setterm -blank 0
setterm -powerdown 0

This should prevent the screen blanking out (presumably to save a CRT or plasma from screen burn). When using a LCD/LED or especially a virtual machine, this doesn’t make as much sense unless you need it. Do whatever you want bro.