Linux notes 

Renew ssh key

ssh-keygen -R 192.168.1.80

Make the disk image (mac)

diskutil list

sudo diskutil unmountDisk /dev/disk1


dd if=/Users/michael/Desktop/RaspberryPi/Images/2012-06-18-wheezy-beta.img of=/dev/disk1 bs=1m

Create new user

su

useradd bufo
passwd bufo
mkdir /home/bufo
chown bufo:users /home/bufo