JediMeister definitely has a good link to help you, but I suggest using rsync, the manual page for it will help you get what you want. All you need to do is create a shellscript, which is just a file with lists of commands and the option alongside each command and make it executable via this
Code:
chmod +x <shellscriptname>.sh
then use iCal to schedule it for you. The best part is that you don't need to download a thing because rsync is pre-installed on your Mac. If you go the rsync route though, keep in mind that you need to refer it to "/" in the terminal, since that is the main directory of the computer itself.
I installed this program. Set it so it won't go off between 7 and 5pm but it went off anyways. In order to apply this I had to click one of the options. What I chose was Scheduler: Installed and loaded. what did I do wrong?