Ubuntu automatic update

I wanted to set up automatic updating of all of packages, based on the directions at AutoWeeklyUpdateHowTo I did the following:

# apt-get install cron-apt
# vi /etc/cron.daily/auto-update
# cat /etc/cron.daily/auto-update
#!/bin/bash
/usr/sbin/cron-apt
/usr/bin/apt-get dist-upgrade
# chmod 755 /etc/cron.daily/auto-update

[This process has been updated]