Enabling automatic updates on Centos6.

First install package yum-cron.

sudo yum -y install yum-cron

Then edit /etc/sysconfig/yum-cron if needed. The options are self-explanatory.
Finally to start the service and enable it to auto start on boot issue the following commands.

sudo service yum cron-start
sudo chkconfig yum-cron on

Updates will be run daily.

#centos, #linux, #updates