dd if=kali-linux-1.1.0a-amd64.iso of=/deb/sdb bs=1M
watch -n 5 killall -USR! dd
parted
print devices
select /dev/sdb
mkpart primary 3063 7063
cryptsetup --verbose --verify-passphrase luksFormat /dev/sdb3
cryptsetup luksOpen /dev/sdb3 usb
ls /dev/mapper/usb
mkfs ext4 /dev/mapper/usb
e2label /dev/mapper/usb persistence
mkdir -p /mnt/usb
mount /dev/mapper/usb /mnt/usb
echo "/ union" > /mnt/usb/persistence.conf
unmount /dev/mapper/usb
cryptsetup luksClose /dev/mapper/usb
apt-get install netspeed