Something

ubuntu@ubuntu:~$ df -h
Filesystem            Size  Used Avail Use% Mounted on
unionfs               1.2G  692M  435M  62% /
varrun                502M   84K  502M   1% /var/run
varlock               502M  4.0K  502M   1% /var/lock
udev                  502M  116K  502M   1% /dev
devshm                502M     0  502M   0% /dev/shm
lrm                   502M  7.4M  495M   2% /lib/modules/2.6.15-26-amd64-generic/volatile
tmpfs                 502M   12K  502M   1% /tmp
ubuntu@ubuntu:~$