Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda4             20641788   5757676  13835472  30% /
udev                    983804         4    983800   1% /dev
tmpfs                   396704       832    395872   1% /run
none                      5120         8      5112   1% /run/lock
none                    991756       116    991640   1% /run/shm