This question already has an answer here:
During the day, usually I'm away from my computer for 3-5 hours. I also sleep 6+ hours every night.
I run Arch Linux x64 on my computer.
Besides the usual things that do not require user intervention (torrenting, backing up data, upgrading the system, etc...), is there anything useful that I can let my computer do while I'm away?
Considering I almost never turn the computer off, it seems like a waste it's sitting there doing nothing. I'm looking for any kind of suggestion, not only machine maintenance.