Backing up files...Writing a program to do this

Question

Hi guys,

I was just wondering are there any built in classes etc I should look at if I was going to create a program to backup data from one location to another?? I don't want help with how to do any code, as I need to do this myself. But I just wondered are there any built in functions etc I should research into that will help me when I come to write it?

Thank You,
Daniel