Df: 
  Filesystem              1K-blocks    Used Available Use% Mounted on
  /dev/mapper/ubuntu-root 478368688 3381060 450687904   1% /
  udev                      1008268       4   1008264   1% /dev
  tmpfs                      408516     864    407652   1% /run
  none                         5120       0      5120   0% /run/lock
  none                      1021284      76   1021208   1% /run/shm
  none                       102400      48    102352   1% /run/user
  /dev/sda1                  233191   67590    153160  31% /boot