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%
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% Describe The CentOS Distribution Release Schema.
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%
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\documentclass{article}
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\usepackage{hyperref}
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\title{The CentOS Release Brand}
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\author{Alain Reguera Delgado}
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\begin{document}
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\maketitle
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\begin{abstract}
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This is abstract.
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\end{abstract}
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\tableofcontents
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\section{Introduction}
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The upstream vendor has released 3 versions of Enterprise Linux that
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CentOS Project rebuilds the freely available SRPMS for\footnote{
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\url{http://wiki.centos.org/About}}. So, the major CentOS releases are
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CentOS 3, CentOS 4 and CentOS 5. The upstream vendor releases security
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updates as required by circumstances. CentOS Project releases rebuilds
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of security updates as soon as possible. Usually within 24 hours (our
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stated goal is with 72 hours, but we are usually much faster).
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The upstream vendor also releases numbered update sets for Version 3,
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Version 4 and Version 5 of their product (i.e. EL 3 update 9, EL 4
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update 6 and EL 5 update 1) 2 to 4 times per year. There are new ISOs
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from the upstream vendor provided for these update sets. Update sets
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will be completed as soon as possible after the vendor releases their
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version\ldots generally within 2 weeks. CentOS Project follows these
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conventions as well, so CentOS 3.9 correlates with EL 3 update 9 and
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CentOS 4.6 correlates with EL 4 update 6, CentOS 5.1 correlates to EL
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5 update 1, etc.
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One thing some people have problems understanding is that if you have
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any CentOS-3 product and update it, you will be updated to the latest
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CentOS-3.x version. The same is true for CentOS-4 and CentOS 5. If you
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update any CentOS-4 product, you will be updated to the latest
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CentOS-4.x version, or to the latest CentOS 5.x version if you are
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updating a CentOS 5 system. This is exactly the same behavior as the
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upstream product. Let's assume that the latest EL4 product is update
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6. If you install the upstream original EL4 CDs (the ones before any
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update set) and upgrade via their up2date, you will have latest update
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set installed (EL4 update 6 in our example).
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Since all updates within a major release (CentOS 3, CentOS 4, CentOS
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5) always upgrade to the latest version when updates are performed
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(thus mimicking upstream behavior), only the latest version is
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maintained in each main tree on the CentOS
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Mirrors\footnote{\url{http://mirrors.centos.org/}}.
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There is a CentOS Vault\footnote{\url{http://vault.centos.org/}}
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containing old CentOS trees. This vault is a picture of the older tree
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when it was removed from the main tree, and does not receive updates.
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It should only be used for reference.
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\section{Workplace}
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\begin{itemize}
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\item SVN:trunk/Identity/Logos/svg/type/2c-tmr.svg
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\item SVN:trunk/Identity/Logos/svg/type/build/tmr3.svg
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\item SVN:trunk/Identity/Logos/svg/type/build/tmr4.svg
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\item SVN:trunk/Identity/Logos/svg/type/build/tmr5.svg
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\end{itemize}
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\section{Design}
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It is very important that people differentiate which is the major
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release of CentOS Distribution they are using. To achive this, we use
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a special brand called \textit{The Release Brand} of CentOS
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Distribution.
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There is one Release Brand for each Major Release of CentOS
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Distribution. The Release Brand of CentOS Distribution is placed on
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images controlling the CentOS Distribution Visual Style.
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The Release Brand of CentOS Distribution is built using two
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components: 1. The CentOS Trademark, 2. The Major Release Number of
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CentOS Distribution.
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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The height of the Release Number is twice the CentOS Trademark height
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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and it is placed on the right side of CentOS Trademark, both bottom
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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aligned.
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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Sometimes The CentOS Message can be added as third component to The
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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Release Brand. In these cases The CentOS Message remains on English
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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language, it is not translated. Because of this, The Release Brand
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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that includes The CentOS Message should be avoided or used in places
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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where there is no posibility for the user to select a different
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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language but English. Examples of these kind of images are Anaconda
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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Prompt and GRUB.
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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\section{Rendering}
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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![](https://seccdn.libravatar.org/avatar/6547be6a776b3f31e43b7f4b6dd82ebcede0f2d11be196e3a70e28760a760a3c?s=16&d=retro) |
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\end{document}
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