It's good book for Linux testing

You love it as the world’s most popular desktop Linux distribution,
and now Ubuntu is available at a server near you. Embracing the very
same features desktop users have grown to love, system administrators
are rapidly adopting Ubuntu due to their ability to configure, deploy,
and manage network services more effectively than ever.

Beginning
Ubuntu Server Administration guides you through all of the key
configuration and administration tasks you’ll need to know. Whether
you’re interested in adopting Ubuntu within a Fortune 500 environment or
just want to use Ubuntu to manage your home network, this book is your
go–to guide to using the distribution securely for a wide variety of
network services. Topics include file, print, web, and FTP management,
command–line tips and tricks, automated installation, configuration and
deployment processes, and kernel management.

What you’ll
learn

• Effectively and securely install, update, and
  deploy your Ubuntu server.
• Configure your server to operate
  most effectively for a wide variety of purposes, including as a web
  server, FTP server, and a file and printer manager.
• Rev up
  your command–line knowledge by taking advantage of little–known
  shell–related features, tips, and tricks.
• Remotely manage
  your server through a wide–variety of services.

Who
is this book for?

System administrators and application
developers seeking to use Ubuntu as a Linux server