Disk size in linux

I am not using linux for a while. Disk have been mounted so I needed to check how much space I have over there. Simple command shows this:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg-root 10G 8.2G 1.9G 82% /
tmpfs 4.0G 0 4.0G 0% /lib/init/rw
varrun 4.0G 136K 4.0G 1% /var/run
varlock 4.0G 0 4.0G 0% /var/lock
udev 4.0G 124K 4.0G 1% /dev
tmpfs 4.0G 0 4.0G 0% /dev/shm
/dev/md0 251M 31M 207M 13% /boot
/dev/mapper/vg-tmp 25G 4.2M 25G 1% /tmp
/dev/mapper/vg-var 5.0G 489M 4.6G 10% /var
/dev/mapper/vg-kuiper
100G 4.2M 100G 1% /export/kuiperReference

Another one would be:
quota -v username