repquota summarizes quota usage and limits for users and groups on a filesystem.
sudo repquota /home
sudo repquota -u /home
sudo repquota -g /home
sudo repquota -ug /home
sudo repquota -v /home
sudo repquota -a
sudo repquota -as
sudo repquota /home | grep "+"
sudo repquota /home | sort -k3 -n
sudo repquota -a | awk '{print $1, $3, $4}'