Imaging your Linux/Unix HD
From system to be backed up.cat /dev/hda | ssh root@192.168.1.199 "cat > /mnt/image-2008.img"
cat /dev/sda | ssh user@host "cat > ~/image.img"
To restore the image (need to be root):
ssh uname@host "cat ~/image.img" | cat > /dev/sda2
ssh root@192.168.1.198 "cat /mnt/image-2008.img" | cat > /dev/hda