CentOS 6.6 is un updated build of the project's legacy branch, compiled from the source code for Red Hat Enterprise Linux 6.6. CentOS 6.6 is based on source code released by Red Hat, Inc. for Red Hat Enterprise Linux. There are many fundamental changes in this release, compared with the past CentOS 6 releases, and we highly recommend everyone study the upstream release notes as well as the upstream technical notes about the changes and how they might impact your installation. All updates since the upstream 6.6 release are also on the CentOS 6.6 mirrors as zero day updates. When installing CentOS 6.6 (or any other version) from any of our media, you should always run 'yum update' after the install.

About Centos

CentOS as a group is a community of open source contributors and users. Typical CentOS users are organisations and individuals that do not need strong commercial support in order to achieve successful operation. CentOS is 100% compatible rebuild of the Red Hat Enterprise Linux, in full compliance with Red Hat's redistribution requirements. CentOS is for people who need an enterprise class operating system stability without the cost of certification and support.