Since the RHCE exam is based on RHEL, that would be the best OS to work with. If you don't want to shell out the money for RHEL, then CentOS 5 would be the next choice.
-- Bowie
Agree 150%.
I agree also. I'm going along the same self-taught path using CentOS 5.5, lurking and absorbing all of the cool stuff that happens on this mailing list.
From reading through that massive SELinux thread, I decided I should
tackle that first, since it seems to be the most misunderstood yet most useful tool to know how to use. Currently using this great manual: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/pdf/Security-En...
I think my next thing to learn is httpd configuration. And then maybe a little perl (I already know python and regex's).
Any other important topics to know?
Rob