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| Preface |

## Obtaining the Example Programs

The example programs in this book are available electronically via `ftp` from these URLs:

> ftp://ftp.uu.net/published/oreilly/nutshell/dnsbind/dns.tar.Z
> ftp://ftp.ora.com/published/oreilly/nutshell/dnsbind/dns.tar.Z

In either case, extract the files from the archive by typing:

>     % zcat dns.tar.Z | tar xf -

System V systems require the following `tar` command instead:

>     % zcat dns.tar.Z | tar xof -

If `zcat` is not available on your system, use separate `uncompress` and `tar` commands.

If you cannot get the examples directly over the Internet, but can send and receive email, you can use `ftpmail` to get them. For help using `ftpmail`, send email to ftpmail@online.oreilly.com with no subject and the single word "help" in the body.

Audience |  | Conventions Used in This Book