path: root/en_US.ISO8859-1/books/handbook/preface/preface.sgml

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<preface id="book-preface">
  <title>Preface</title>
  
  <bridgehead id="preface-audience" renderas=sect1>Intended
  Audience</bridgehead>

  <para>The &os; newcomer will find that the first section of this
    book guides the user through the &os; installation process and
    gently introduces the concepts and conventions that underpin &unix;.
    Working through this section requires little more than the desire
    to explore, and the ability to take on board new concepts as they
    are introduced.</para>

  <para>Once you have traveled this far, the second, far larger,
    section of the Handbook is a comprehensive reference to all manner
    of topics of interest to &os; system administrators.  Some of
    these chapters may recommend that you do some prior reading, and
    this is noted in the synopsis at the beginning of each
    chapter.</para>

  <para>For a list of additional sources of information, please see <xref
    linkend="bibliography">.</para>

  <bridgehead id="preface-changes-from3" renderas=sect1>Changes from the
  Third Edition</bridgehead>

  <para>The current online version of the Handbook represents the
    cumulative effort of many hundreds of contributors over the past
    10 years.  The following are some of the significant changes since
    the two volume third edition was published in 2004:</para>

  <itemizedlist>
      <listitem>
	<para><xref linkend="dtrace">, &dtrace;, has been added with
	  information about the powerful &dtrace; performance analysis
	  tool.</para>
      </listitem>

      <listitem>
	<para><xref linkend="filesystems">, File Systems Support, has
	  been added with information about non-native file systems in
	  &os;, such as ZFS from &sun;.</para>
      </listitem>

      <listitem>
	<para><xref linkend="audit">, Security Event Auditing, has
	  been added to cover the new auditing capabilities in &os;
	  and explain its use.</para>
      </listitem>

      <listitem>
        <para><xref linkend="virtualization">, Virtualization, has
          been added with information about installing &os; on
          virtualization software.</para>
      </listitem>

      <listitem>
	<para><xref linkend="bsdinstall">, Installing
	  &os;&nbsp;9.<replaceable>x</replaceable> and Later, has been
	  added to cover installation of &os; using the new
	  installation utility,
	  <application>bsdinstall</application>.</para>
      </listitem>
  </itemizedlist>

  <bridgehead id="preface-changes-from2" renderas=sect1>Changes from the
  Second Edition (2004)</bridgehead>

  <para>The third edition was the culmination of over two years of
      work by the dedicated members of the &os; Documentation
      Project.  The printed edition grew to such a size that it was
      necessary to publish as two separate volumes.  The following are
      the major changes in this new edition:</para>

  <itemizedlist>
      <listitem>
	<para><xref linkend="config-tuning">, Configuration and
	  Tuning, has been expanded with new information about the
	  ACPI power and resource management, the <command>cron</command> system utility,
	  and more kernel tuning options.</para>
      </listitem>

      <listitem>
	<para><xref linkend="security">, Security, has been expanded with
	  new information about virtual private networks (VPNs), file
	  system access control lists (ACLs), and security
	  advisories.</para>
      </listitem>

      <listitem>
	<para><xref linkend="mac">, Mandatory Access Control (MAC), is
	  a new chapter with this edition.  It explains what MAC is
	  and how this mechanism can be used to secure a &os; 
	  system.</para>
      </listitem>

      <listitem>
	<para><xref linkend="disks">, Storage, has been expanded with
	  new information about USB storage devices, file system
	  snapshots, file system quotas, file and network backed
	  filesystems, and encrypted disk partitions.</para>
      </listitem>

      <listitem>
	<para><xref linkend="vinum-vinum">, Vinum, is a new chapter
	with this edition.  It describes how to use Vinum, a logical
	volume manager which provides device-independent logical
	disks, and software RAID-0, RAID-1 and RAID-5.</para>
      </listitem>

      <listitem>
	<para>A troubleshooting section has been added to <xref
	  linkend="ppp-and-slip">, PPP and SLIP.</para>
      </listitem>

      <listitem>
	<para><xref linkend="mail">, Electronic Mail, has been
	  expanded with new information about using alternative
	  transport agents, SMTP authentication, UUCP, <application>fetchmail</application>,
	  <application>procmail</application>, and other advanced topics.</para>
      </listitem>

      <listitem>
	<para><xref linkend="network-servers">, Network Servers, is
	  all new with this edition.  This chapter includes
	  information about setting up the <application>Apache HTTP Server</application>, <application>ftpd</application>,
	  and setting up a server for &microsoft; &windows; clients with
	  <application>Samba</application>.  Some sections from <xref
	  linkend="advanced-networking">, Advanced Networking, were
	  moved here to improve the presentation.</para>
      </listitem>

      <listitem>
	<para><xref linkend="advanced-networking">, Advanced
	  Networking, has been expanded with new information about
	  using &bluetooth; devices with &os;, setting up wireless
	  networks, and Asynchronous Transfer Mode (ATM)
	  networking.</para>
      </listitem>

      <listitem>
        <para>A glossary has been added to provide a central location
	  for the definitions of technical terms used throughout the
	  book.</para>
      </listitem>

      <listitem>
        <para>A number of aesthetic improvements have been made to the
          tables and figures throughout the book.</para>
      </listitem>
    </itemizedlist>

  <bridgehead id="preface-changes" renderas=sect1>Changes from the
  First Edition (2001)</bridgehead>

    <para>The second edition was the culmination of over two years of
      work by the dedicated members of the &os; Documentation
      Project.  The following were the major changes in this
      edition:</para>

<!-- Talk a little about justification and other stylesheet changes? -->

    <itemizedlist>
      <listitem>
	<para>A complete Index has been added.</para>
      </listitem>
      <listitem>
	<para>All ASCII figures have been replaced by graphical diagrams.</para>
      </listitem>
      <listitem>
	<para>A standard synopsis has been added to each chapter to
	give a quick summary of what information the chapter contains,
	and what the reader is expected to know.</para>
      </listitem>
      <listitem>
	<para>The content has been logically reorganized into three
	parts: <quote>Getting Started</quote>, <quote>System Administration</quote>, and
	<quote>Appendices</quote>.</para>
      </listitem>
      <listitem>
	<para><xref linkend="install"> (<quote>Installing &os;</quote>) was completely
	rewritten with many screenshots to make it much easier for new
	users to grasp the text.</para>
      </listitem>
      <listitem>
	<para><xref linkend="basics"> (<quote>&unix; Basics</quote>) has been expanded to contain
	additional information about processes, daemons, and
	signals.</para>
      </listitem>
      <listitem>
	<para><xref linkend="ports"> (<quote>Installing Applications</quote>) has been expanded
	to contain additional information about binary package
	management.</para>
      </listitem>
      <listitem>
	<para><xref linkend="x11"> (<quote>The X Window System</quote>) has been completely
 	rewritten with an emphasis on using modern desktop
	technologies such as <application>KDE</application> and <application>GNOME</application> on &xfree86; 4.X.</para>
      </listitem>
      <listitem>
	<para><xref linkend="boot"> (<quote>The &os; Booting Process</quote>) has been
	expanded.</para>
      </listitem>
      <listitem>
        <para><xref linkend="disks"> (<quote>Storage</quote>) has been written from what used
        to be two separate chapters on <quote>Disks</quote> and <quote>Backups</quote>.  We feel
        that the topics are easier to comprehend when presented as a
        single chapter.  A section on RAID (both hardware and
        software) has also been added.</para>
      </listitem>
      <listitem>
	<para><xref linkend="serialcomms"> (<quote>Serial Communications</quote>) has been completely
	reorganized and updated for &os; 4.X/5.X.</para>
      </listitem>
      <listitem>
	<para><xref linkend="ppp-and-slip"> (<quote>PPP and SLIP</quote>) has been substantially
	updated.</para>
      </listitem>
      <listitem>
	<para>Many new sections have been added to <xref linkend="advanced-networking">
	(<quote>Advanced Networking</quote>).</para>
      </listitem>
      <listitem>
	<para><xref linkend="mail"> (<quote>Electronic Mail</quote>) has been expanded to
	  include more information about configuring
	  <application>sendmail</application>.</para>
      </listitem>
      <listitem>
	<para><xref linkend="linuxemu"> (<quote>&linux; Compatibility</quote>) has been expanded to
	  include information about installing
	  <application>&oracle;</application> and
	<application>&sap.r3;</application>.</para>
      </listitem>
      <listitem>
	<para>The following new topics are covered in this second
	edition:</para>
	<itemizedlist>
	  <listitem>
	    <para>Configuration and Tuning (<xref linkend="config-tuning">).</para>
	  </listitem>
	  <listitem>
           <para>Multimedia (<xref linkend="multimedia">)</para>
	  </listitem>
	</itemizedlist>
      </listitem>
    </itemizedlist>

  <bridgehead id="preface-overview" renderas=sect1>Organization of This
  Book</bridgehead>

  <para>This book is split into five logically distinct sections.
    The first section, <emphasis>Getting Started</emphasis>, covers
    the installation and basic usage of &os;.  It is expected that
    the reader will follow these chapters in sequence, possibly
    skipping chapters covering familiar topics.  The second section,
    <emphasis>Common Tasks</emphasis>, covers some frequently used
    features of &os;.  This section, and all subsequent sections,
    can be read out of order.  Each chapter begins with a succinct
    synopsis that
    describes what the chapter covers and what the reader is expected
    to already know.  This is meant to allow the casual reader to skip
    around to find chapters of interest.  The third section,
    <emphasis>System Administration</emphasis>, covers administration
    topics.  The fourth section, <emphasis>Network
    Communication</emphasis>, covers networking and server topics.
    The fifth section contains
    appendices of reference information.</para>

  <variablelist>

<!-- Part I - Introduction -->

    <varlistentry>
      <term><emphasis><xref linkend="introduction">, Introduction</emphasis></term>
      <listitem>
	<para>Introduces &os; to a new user.  It describes the
	history of the &os; Project, its goals and development model.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="install">, Installation of
	&os;&nbsp;8.<replaceable>x</replaceable> and Earlier</emphasis></term>
      <listitem>
	<para>Walks a user through the entire installation process of
	  &os;&nbsp;8.<replaceable>x</replaceable> and earlier using
	  <application>sysinstall</application>.  Some advanced installation
	  topics, such as installing through a serial console, are also
	  covered.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="bsdinstall">, Installation of
	&os;&nbsp;9.<replaceable>x</replaceable> and Later</emphasis></term>
      <listitem>
	<para>Walks a user through the entire installation process of
	  &os;&nbsp;9.<replaceable>x</replaceable> and later using
	  <application>bsdinstall</application>.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="basics">, &unix; Basics</emphasis></term>
      <listitem>
	<para>Covers the basic commands and functionality of the
	&os; operating system.  If you are familiar with &linux; or
	another flavor of &unix; then you can probably skip this
	chapter.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="ports">, Installing Applications</emphasis></term>
      <listitem>
	<para>Covers the installation of third-party software with
	both &os;'s innovative <quote>Ports Collection</quote> and standard
	binary packages.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="x11">, The X Window System</emphasis></term>
      <listitem>
	<para>Describes the X Window System in general and using
	X11 on &os; in particular.  Also describes common
	desktop environments such as <application>KDE</application> and <application>GNOME</application>.</para>
      </listitem>
    </varlistentry>

<!-- Part II Common Tasks -->

    <varlistentry>
      <term><emphasis><xref linkend="desktop">, Desktop Applications</emphasis></term>
      <listitem>
        <para>Lists some common desktop applications, such as web browsers
         and productivity suites, and describes how to install them on
         &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="multimedia">, Multimedia</emphasis></term>
      <listitem>
      <para>Shows how to set up sound and video playback support for your
      system.  Also describes some sample audio and video applications.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="kernelconfig">, Configuring the &os; 
      Kernel</emphasis></term>
      <listitem>
	<para>Explains why you might need to configure a new kernel
	and provides detailed instructions for configuring, building,
	and installing a custom kernel.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="printing">, Printing</emphasis></term>
      <listitem>
	<para>Describes managing printers on &os;, including
	information about banner pages, printer accounting, and
	initial setup.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="linuxemu">, &linux; Binary Compatibility</emphasis></term>
      <listitem>
	<para>Describes the &linux; compatibility features of &os;.
	Also provides detailed installation instructions for many
	popular &linux; applications such as <application>&oracle;</application> and
	  <application>&mathematica;</application>.</para>
      </listitem>
    </varlistentry>

<!-- Part III - System Administration -->

    <varlistentry>
      <term><emphasis><xref linkend="config-tuning">, Configuration and Tuning</emphasis></term>
      <listitem>
	<para>Describes the parameters available for system
	administrators to tune a &os; system for optimum
	performance.  Also describes the various configuration files
	used in &os; and where to find them.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="boot">, Booting Process</emphasis></term>
      <listitem>
	<para>Describes the &os; boot process and explains
	how to control this process with configuration options.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="users">, Users and Basic Account
      Management</emphasis></term>
      <listitem>
	<para>Describes the creation and manipulation of user
	  accounts.  Also discusses resource limitations that can be
	  set on users and other account management tasks.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="security">, Security</emphasis></term>
      <listitem>
	<para>Describes many different tools available to help keep your
	&os; system secure, including Kerberos, IPsec and OpenSSH.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="jails">, Jails</emphasis></term>
      <listitem>
	<para>Describes the jails framework, and the improvements of jails
	  over the traditional chroot support of &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="mac">, Mandatory Access Control</emphasis></term>
      <listitem>
	<para>Explains what Mandatory Access Control (MAC) is and how this
	mechanism can be used to secure a &os; system.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="audit">, Security Event Auditing</emphasis></term>
      <listitem>
	<para>Describes what &os; Event Auditing is, how it can be installed,
	  configured, and how audit trails can be inspected or monitored.</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><emphasis><xref linkend="disks">, Storage</emphasis></term>
      <listitem>
	<para>Describes how to manage storage media and filesystems
  	  with &os;.  This includes physical disks, RAID arrays,
  	  optical and tape media, memory-backed disks, and network
  	  filesystems.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="geom">, GEOM</emphasis></term>
      <listitem>
	<para>Describes what the GEOM framework in &os; is and how
	  to configure various supported RAID levels.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="filesystems">, File Systems Support</emphasis></term>
      <listitem>
	<para>Examines support of non-native file systems in &os;, like the Z
	  File System from &sun;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="vinum-vinum">, Vinum</emphasis></term>
      <listitem>
	<para>Describes how to use Vinum, a logical volume manager
	  which provides device-independent logical disks, and
	  software RAID-0, RAID-1 and RAID-5.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="virtualization">, Virtualization</emphasis></term>
      <listitem>
	<para>Describes what virtualization systems offer, and how they
	  can be used with &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="l10n">, Localization</emphasis></term>
      <listitem>
	<para>Describes how to use &os; in languages other than
	English.  Covers both system and application level
	localization.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="updating-upgrading">, Updating and Upgrading &os;</emphasis></term>
      <listitem>
	<para>Explains the differences between &os;-STABLE,
	&os;-CURRENT, and &os; releases.  Describes which users
	would benefit from tracking a development system and outlines
	that process.  Covers the methods users may take to update their
	system to the latest security release.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="dtrace">, &dtrace;</emphasis></term>
      <listitem>
	<para>Describes how to configure and use the &dtrace; tool from &sun;
	  in &os;.  Dynamic tracing can help locate performance issues, by
	  performing real time system analysis.</para>
      </listitem>
    </varlistentry>

<!-- Part IV - Network Communications -->

    <varlistentry>
      <term><emphasis><xref linkend="serialcomms">, Serial Communications</emphasis></term>
      <listitem>
	<para>Explains how to connect terminals and modems to your
  	&os; system for both dial in and dial out connections.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="ppp-and-slip">, PPP and SLIP</emphasis></term>
      <listitem>
	<para>Describes how to use PPP, SLIP, or PPP over Ethernet to
	connect to remote systems with &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="mail">, Electronic Mail</emphasis></term>
      <listitem>
	<para>Explains the different components of an email server and
	dives into simple configuration topics for the most popular
	mail server software:
	<application>sendmail</application>.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="network-servers">, Network Servers</emphasis></term>
      <listitem>
	<para>Provides detailed instructions and example configuration
	  files to set up your &os; machine as a network filesystem
	  server, domain name server, network information system
	  server, or time synchronization server.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="firewalls">, Firewalls</emphasis></term>
      <listitem>
        <para>Explains the philosophy behind software-based firewalls and
          provides detailed information about the configuration of the
          different firewalls available for &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="advanced-networking">, Advanced Networking</emphasis></term>
      <listitem>
	<para>Describes many networking topics, including sharing an
	Internet connection with other computers on your LAN, advanced
	routing topics, wireless networking, &bluetooth;, ATM, IPv6, and
	much more.</para>
      </listitem>
    </varlistentry>

<!-- Part V - Appendices -->

    <varlistentry>
      <term><emphasis><xref linkend="mirrors">, Obtaining &os; </emphasis></term>
      <listitem>
	<para>Lists different sources for obtaining &os; media on CDROM
	or DVD as well as different sites on the Internet that allow
	you to download and install &os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="bibliography">, Bibliography </emphasis></term>
      <listitem>
	<para>This book touches on many different subjects that may
	leave you hungry for a more detailed explanation.  The
	bibliography lists many excellent books that are referenced in
	the text.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="eresources">, Resources on the Internet</emphasis></term>
      <listitem>
	<para>Describes the many forums available for &os; users to
	post questions and engage in technical conversations about
	&os;.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><emphasis><xref linkend="pgpkeys">, PGP Keys</emphasis></term>
      <listitem>
	<para>Lists the PGP fingerprints of several &os; Developers.</para>
      </listitem>
    </varlistentry>
  </variablelist>

  <bridgehead id="preface-conv" renderas=sect1>Conventions used
  in this book</bridgehead>

    <para>To provide a consistent and easy to read text, several
    conventions are followed throughout the book.</para>

  <bridgehead id="preface-conv-typographic" renderas=sect2>Typographic
  Conventions</bridgehead>

  <variablelist>
    <varlistentry>
      <term><emphasis>Italic</emphasis></term>
      <listitem>
	<para>An <emphasis>italic</emphasis> font is used for filenames, URLs,
	  emphasized text, and the first usage of technical terms.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><literal>Monospace</literal></term>
      <listitem>
	  <para>A <literal>monospaced</literal> font is
	  used for error messages, commands, environment variables,
	  names of ports, hostnames, user names, group names, device
	  names, variables, and code fragments.</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term><application>Bold</application></term>
      <listitem>
	<para>A <application>bold</application> font is used for
	applications, commands, and keys.</para>
      </listitem>
    </varlistentry>
  </variablelist>

<!-- Var list -->
  <bridgehead id="preface-conv-commands"
  renderas=sect2>User Input</bridgehead>

  <para>Keys are shown in <keycap>bold</keycap> to stand out from
    other text.  Key combinations that are meant to be typed
    simultaneously are shown with `<literal>+</literal>' between
    the keys, such as:</para>

  <para>
    <keycombo action="simul">
      <keycap>Ctrl</keycap>
      <keycap>Alt</keycap>
      <keycap>Del</keycap>
    </keycombo>
  </para>

  <para>Meaning the user should type the <keycap>Ctrl</keycap>,
    <keycap>Alt</keycap>, and <keycap>Del</keycap> keys at the same
    time.</para>

  <para>Keys that are meant to be typed in sequence will be separated with
    commas, for example:</para>

  <para>
    <keycombo action="simul">
      <keycap>Ctrl</keycap>
      <keycap>X</keycap>
    </keycombo>,
    <keycombo action="simul">
      <keycap>Ctrl</keycap>
      <keycap>S</keycap>
    </keycombo>
  </para>

  <para>Would mean that the user is expected to type the
    <keycap>Ctrl</keycap> and <keycap>X</keycap> keys simultaneously
    and then to type the <keycap>Ctrl</keycap> and <keycap>S</keycap>
    keys simultaneously.</para>

<!-- How to type in key stokes, etc.. -->
  <bridgehead id="preface-conv-examples"
  renderas=sect2>Examples</bridgehead>

  <para>Examples starting with <devicename>E:\&gt;</devicename>
  indicate a &ms-dos; command.  Unless otherwise noted, these commands
  may be executed from a <quote>Command Prompt</quote> window in a modern &microsoft.windows;
  environment.</para>

  <screen><prompt>E:\&gt;</prompt> <userinput>tools\fdimage floppies\kern.flp A:</userinput></screen>

  <para>Examples starting with &prompt.root; indicate a command that
    must be invoked as the superuser in &os;.  You can login as
    <username>root</username> to type the command, or login as your
    normal account and use &man.su.1; to gain
    superuser privileges.</para>

  <screen>&prompt.root; <userinput>dd if=kern.flp of=/dev/fd0</userinput></screen>

  <para>Examples starting with &prompt.user; indicate a command that
    should be invoked from a normal user account.  Unless otherwise
    noted, C-shell syntax is used for setting environment variables
    and other shell commands.</para>

  <screen>&prompt.user; <userinput>top</userinput></screen>

  <bridgehead id="preface-acknowledgements"
  renderas=sect1>Acknowledgments</bridgehead>

  <para>The book you are holding represents the efforts of many hundreds of
    people around the world.  Whether they sent in fixes for typos, or
    submitted complete chapters, all the contributions have been
    useful.</para>

  <para>Several companies have supported the development of this
    document by paying authors to work on it full-time, paying for
    publication, etc.  In particular, BSDi (subsequently acquired by
    <ulink url="http://www.windriver.com">Wind River Systems</ulink>)
    paid members of the &os; Documentation Project to work on
    improving this book full time leading up to the publication of the
    first printed edition in March 2000 (ISBN 1-57176-241-8).  Wind
    River Systems then paid several additional authors to make a
    number of improvements to the print-output infrastructure and to add
    additional chapters to the text.  This work culminated in the
    publication of the second printed edition in November 2001 (ISBN
    1-57176-303-1).  In 2003-2004, <ulink
    url="http://www.freebsdmall.com">&os; Mall, Inc</ulink>, paid
    several contributors to improve the Handbook in preparation for
    the third printed edition.</para>

</preface>

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