Dave Gutteridge <dave@xxxxxxxxxxxxxxx> wrote:
> I've read on this list that CentOS is equal to Red Hat 9,
Nope.
> or to Red Hat EL 4.
CentOS 4, yes.
Here's the breakdown:
CentOS 4 = RHEL 4
CentOS 3 = RHEL 3
RHEL 3 is based on Red Hat Linux (RHL) 9, with some latter
updates coming from Fedora Core (FC) 1. Red Hat Linux 8 is
largely compatible with RHL9/FC1.
RHEL 4 is based on Fedora Core (FC) 3. Fedora Core 2 is
largely compatible with FC3.
The lineage:
RHL8 -> RHL9-> RHEL 3 <-FC1
FC2 -> FC3-> RHEL 4
RHL/FC releases are on a 6 month cycle.
RHEL releases are on a 18 month cycle.
That's why there is typically 2-3 RHL/FC releases per RHEL
release. In the "good'ole days" before RHEL 3, Red Hat used
revisions .0, .1, .2, etc..., and ".2" was the most mature.
In fact, Red Hat's first "enterprise" attempt was called Red
Hat Linux 6.2 Enterprise (6.2E for short).
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