df

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             901G  855G  556K 100% /
udev                  3,0G  4,0K  3,0G   1% /dev
tmpfs                 1,2G  964K  1,2G   1% /run
none                  5,0M     0  5,0M   0% /run/lock
none                  3,0G  5,2M  3,0G   1% /run/shm