The example programs in this book are available electronically via ftp from these URLs:
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 email@example.com with no subject and the single word "help" in the body.