root.hind or named.hint file update

[Pol Hallen]

Hello all :-)

is it recommend put a cron script for auto-update root.hind and 
named.hint db?

wget --user=ftp --password=ftp ftp://ftp.rs.internic.net/domain/db.cache 
-O /etc/bind/db.root
dig +bufsize=1200 +norec NS . @a.root-servers.net > /var/named/named.root

using debian there isn't any cron script

thanks!

Pol