User Quotas

First Commands:

mkdir -p /var/chroot/home/USER
chown example:example /var/chroot/home/USER
chmod 700 /var/chroot/home/USER

Edit /etc/ssh/sshd_config:

Match user USER
ChrootDirectory /var/chroot

Set quota:

sudo setquota -u USER 1000M 1100M 0 0 /