
Preface
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xi
Chapter 8, Local Network Services
Shows you how to manage users and configure common networking elements
such as DHCP and gateway software on local area networks (LANs).
Chapter 9, Virtualization in the Modern Enterprise
Shows how to set up Xen, VMware on a Linux host and then add guest operat-
ing systems.
Chapter 10, Scripting
Shows you some basic techniques for writing robust and powerful bash shell
scripts that can save you a lot of administration time.
Chapter 11, Backing Up Data
Presents a range of techniques for carrying out this crucial function, from basic
rysnc and tar to the powerful Amanda system.
Appendix, bash Script Samples
Contains a few shell scripts that we’ve found useful when doing system adminis-
tration and that might give you tips for how to write your own scripts.
Conventions Used in This Book
The following typographical conventions are used in this book:
Italic
Indicates new terms, URLs, commands and command-line options, email
addresses, filenames, file extensions, and directories.
Constant width
Indicates the contents of files or the output from commands.
Constant width bold
Shows commands or other text that should be typed literally by the user. Also
used to highlight key portions of code or files.
Constant width italic
Shows text that should be replaced with user-supplied values.
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