aptitude install pure-ftpd 
echo "yes" > /etc/pure-ftpd/conf/Daemonize 
echo "yes" > /etc/pure-ftpd/conf/NoAnonymous 
echo "yes" > /etc/pure-ftpd/conf/ChrootEveryone 
echo "yes" > /etc/pure-ftpd/conf/IPV4Only 
/etc/init.d/pure-ftpd restart