git

Backup is a very-very important thing in IT. The loss of code-snippets, patch-sets, configurations or documents is very painful for programmers, system administrators and secrataries.

There are many options for this, among others hand (manually) copying. There are many applications responsible for backup on Linux, Mac or Windows. Many people use rsync as lacyc3 wrote a good post about it (in Hungarian).

What happens if the target is a remote machine?

Of course, it’s a good idea because when your local machine fails you can restore all data. For example I use git.