Advanced backup tools that keep multiple copies of files and so on have their place, but sometimes you just need a simple scheduled sync, not a full backup. For example, I have an SD card that stays in my laptop almost all the time. On this, I keep a copy of most of my home folder that gets updated every day at 1:30 in the morning. I no longer have to think about it, it just happens. Here's how you can do the same thing...