ubuntu@ubuntu:~$ df -h
Filesystem            Size  Used Avail Use% Mounted on
tmpfs                 506M   16M  491M   3% /lib/modules/2.6.22-14-generic/volatile
tmpfs                 506M   16M  491M   3% /lib/modules/2.6.22-14-generic/volatile
varrun                506M   88K  506M   1% /var/run
varlock               506M     0  506M   0% /var/lock
udev                  506M   72K  506M   1% /dev
devshm                506M     0  506M   0% /dev/shm
tmpfs                 506M   12K  506M   1% /tmp