Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/sda1        7223800   5033880   1822976  74% /
udev              242844         4    242840   1% /dev
tmpfs             100660      1036     99624   2% /run
none                5120         0      5120   0% /run/lock
none              251644         0    251644   0% /run/shm
/dev/sdb1      516059576 317782832 172062452  65% /mnt/av