#du -sh /* 2> /dev/null

6,6M    /bin
18M     /boot
0       /dev
3,3M    /etc
9,3M    /home
0       /initrd.img
122M    /lib
3,0M    /lib32
4,0K    /lib64
16K     /lost+found
8,0K    /media
4,0K    /mnt
4,0K    /opt
0       /proc
236K    /root
152K    /run
5,4M    /sbin
4,0K    /selinux
4,0K    /srv
0       /sys
4,0K    /tmp
396M    /usr
287M    /var
0       /vmlinuz