ubuntu@ubuntu:~$ df
Filesystem           1K-blocks      Used Available Use% Mounted on
unionfs                 862640    684800    177840  80% /
varrun                  225648        80    225568   1% /var/run
varlock                 225648         4    225644   1% /var/lock
udev                    225648       104    225544   1% /dev
devshm                  225648         0    225648   0% /dev/shm
lrm                     225648      9000    216648   4% /lib/modules/2.6.15-23-386/volatile
tmpfs                   225648        16    225632   1% /tmp