Background:

I never expected to have only command line access to my Mac, but the day has arrived! :) Due to a video card problem, any attempt to boot the normal OS or recovery partition results in a kernel panic. However, I can boot into Single User mode! (The screen has a bunch of green horizontal lines through it every other pixel, but it is still readable.)

I have checked and verified that my data is intact. I have a Genius Bar appointment to get the video card replaced.

I have a couple of backup drives on which I have CarbonCopyCloner backups of my computer, however these are out of date.

I want to back up my Mac from the Single User Mode command line using CarbonCopyCloner before I take it for the video card replacement.

(I found this link on the ccc tool, but I don't have ccc 4.)

Questions are:

1. How can I use CarbonCopyCloner 3.5.7 from the Single User Mode command line to update one of my full backups before I take the machine in for service?
2. If this can't be done from the command line with this version of CCC, how else could I back up all data before taking it in for service (from Single User mode)?