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and the first version of FreeBSD was not ready until the end of the |
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and the first version of FreeBSD was not ready until the end of the |
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year. In the meantime, the code base had diverged sufficiently to |
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year. In the meantime, the code base had diverged sufficiently to |
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make it difficult to merge. In addition, the projects had different |
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make it difficult to merge. In addition, the projects had different |
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aims, as we will see below. In 1996, a further project, |
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aims, as we will see below. In 1996, |
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<ulink url="http://www.OpenBSD.org/">OpenBSD</ulink>, split off from |
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<ulink url="http://www.OpenBSD.org/">OpenBSD</ulink> split off from |
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NetBSD.</para> |
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NetBSD, and in 2003, |
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<ulink url="http://www.dragonflybsd.org/">DragonFlyBSD</ulink> split |
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of from FreeBSD.</para> |
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</sect1> |
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</sect1> |
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<sect1> |
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<sect1> |
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distributions, of course). In the following section, we will look at BSD |
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distributions, of course). In the following section, we will look at BSD |
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and compare it to Linux. The description applies most closely to |
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and compare it to Linux. The description applies most closely to |
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FreeBSD, which accounts for an estimated 80% of the BSD installations, |
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FreeBSD, which accounts for an estimated 80% of the BSD installations, |
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but the differences from NetBSD and OpenBSD are small.</para> |
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but the differences from NetBSD, OpenBSD and DragonFlyBSD are small. |
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</para> |
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<sect2> |
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<sect2> |
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<title>Who owns BSD?</title> |
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<title>Who owns BSD?</title> |
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<sect2> |
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<sect2> |
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<title>BSD releases</title> |
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<title>BSD releases</title> |
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<para>Each BSD project provides the system in three different |
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<para>FreeBSD, NetBSD and OpenBSD provides the system in three different |
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<quote>releases</quote>. As with Linux, releases are assigned a |
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<quote>releases</quote>. As with Linux, releases are assigned a |
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number such as 1.4.1 or 3.5. In addition, the version number has a |
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number such as 1.4.1 or 3.5. In addition, the version number has a |
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suffix indicating its purpose:</para> |
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suffix indicating its purpose:</para> |
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<title>What versions of BSD are available?</title> |
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<title>What versions of BSD are available?</title> |
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<para>In contrast to the numerous Linux distributions, there are only |
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<para>In contrast to the numerous Linux distributions, there are only |
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three open source BSDs. Each BSD project maintains its own source |
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four major open source BSDs. Each BSD project maintains its own source |
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tree and its own kernel. In practice, though, there appear to be |
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tree and its own kernel. In practice, though, there appear to be |
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fewer divergences between the userland code of the projects than there |
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fewer divergences between the userland code of the projects than there |
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is in Linux.</para> |
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is in Linux.</para> |
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choice of security-conscious organizations such as banks, stock |
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choice of security-conscious organizations such as banks, stock |
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exchanges and US Government departments. Like NetBSD, it runs on |
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exchanges and US Government departments. Like NetBSD, it runs on |
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a number of platforms.</para> |
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a number of platforms.</para> |
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</listitem> |
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<listitem> |
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<para>DragonFlyBSD aims for high performance and scalability under |
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everything from a single-node UP system to a massively clustered system. |
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DragonFlyBSD has several long-range technical goals, but focus lies on |
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providing a SMP-capable infrastructure that is easy to understand, |
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maintain and develop for.</para> |
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</listitem> |
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</listitem> |
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</itemizedlist> |
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</itemizedlist> |
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