This section contains several tutorials on CentOS and yum. CentOS is a free version of RHEL, and we currently use it on quite a number of servers, and find in most cases it works even better than RHEL.

Upgrading CentOS 3.3/3.4/3.* to CentOS 4
This quick tutorial provides instructions on how to upgrade to CentOS 4 RC1 (free version of RHEL 4).

Upgrading Red Hat 9 to CentOS 3.4 or 4
This tutorial shows how to upgrade Red Hat 9 to CentOS 3.4 or 4.

Upgrading Fedora Core 1 or 2 to CentOS 3.4 or 4
This tutorial shows how to upgrade Red Hat 9 to CentOS 3.4 or 4.