After long months of work, I am glad to announce to you the publishing of my second book entitled "Ubuntu Server Essentials", an essential book that helps the reader in an easy way to handle and then master Ubuntu Server with the minimum needed requirements. It is suitable for beginners as well as advanced users. You can get more information, and of course command the book :) from this page:
https://www.packtpub.com/networking-and-servers/ubuntu-server-essentials
PS: just a reminder: my first book was "Learning Zimbra Server Essentials", it was focused on the famous Open Source mail server "Zimbra", hereafter the link: https://www.packtpub.com/networking-and-servers/learning-zimbra-server-essentials
