(RaspberryPi2)ubuntu@localhost:~$ df -h
Filesystem                   Size  Used Avail Use% Mounted on
udev                         450M     0  450M   0% /dev
tmpfs                         93M  3.0M   90M   4% /run
/dev/mmcblk0p4               5.3G  375M  4.6G   8% /writable
/dev/disk/by-label/system-b  976M  381M  529M  42% /
tmpfs                        461M  4.0K  461M   1% /etc/fstab
tmpfs                        461M     0  461M   0% /dev/shm
tmpfs                        5.0M     0  5.0M   0% /run/lock
tmpfs                        461M     0  461M   0% /sys/fs/cgroup
tmpfs                        461M     0  461M   0% /tmp
tmpfs                        461M     0  461M   0% /mnt
tmpfs                        461M     0  461M   0% /var/lib/sudo
/dev/mmcblk0p2               976M  377M  533M  42% /writable/cache/system
/dev/mmcblk0p1                63M   30M   34M  47% /boot/uboot
cgmfs                        100K     0  100K   0% /run/cgmanager/fs
tmpfs                         93M     0   93M   0% /run/user/1000