Image to SD
1. sha1sum ~/2012-12-16-wheezy-raspbian.zip
2. unzip ~/2012-12-16-wheezy-raspbian.zip
3. Run df -h to see what devices are currently mounted -> note which is the SD card
4. umount /dev/mmcblk0p1
5. dd bs=4M if=~/2012-12-16-wheezy-raspbian.img of=/dev/mmcblk0