Colocar controle de Quota

No link http://www.howtoforge.com/samba_setup_ubuntu_5.10_p3 tem-se um exemplo de como configurar quota.
Vais adiante estudarei estas configurações.
Quota
apt-get install quota
Edit /etc/fstab to look like this (I added ,usrquota,grpquota to the partitions with the mount point / and /home):
# /etc/fstab: static file system information.
#
#
proc /proc proc defaults 0 0
/dev/sda3 / ext3 defaults,errors=remount-ro,usrquota,grpquota 0 1
/dev/sda1 /boot ext3 defaults 0 2
/dev/sda4 /home ext3 defaults,usrquota,grpquota 0 2
/dev/sda2 none swap sw 0 0
/dev/hdc /media/cdrom0 udf,iso9660 ro,user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
Then run:
touch /quota.user /quota.group
chmod 600 /quota.*
mount -o remount /
touch /home/quota.user /home/quota.group
chmod 600 /home/quota.*
mount -o remount /home
quotacheck -avugm
quotaon -avug