This book can be read online, and is published under the GFDL license. Hhowever, reading a printed copy allows a better in-depth understanding of this framework. It is very well written, with a lot of examples. It is directed to either newbies wanting to begin developing web applications with symfony, or experts, as it can be used as a quick reference for specific aspects of the web framework.

Though the book was updated online for newer releases of symfony, no new revision was printed at the moment of writing. Symfony 1.0 remains the preferred stable branch for long term projects, with its 3 years support (until January 2010).

For those who like having a book in their hands and want to use a simple but powerful web framework, here is the Amazon link for buying a printed copy.

This book is described as « a complete hands-on guide to using SELinux ». Although it is very complete, it aims more at policy writers than SELinux administrators. I am currently reading it for the second time, as some parts are still quite obscure for me.

However, it allowed me to set up SELinux on two systems without any major issue. I have even started writing small policies for nullmailer and Apache mod_dav.

This book is publishd by Prentice Hall Professional.

All the topics are covered in this book (bash, file systems, networking, package management etc.).

Many people report having passed the LPIC tests thanks to this book and its sample exams.

The book is published by O’Reilly & Associates.

Although many documentations are already available on the Web, I have appreciated reading through this book, and recommend any people interested in alternatives to Xen buying this book.

Other (more detailed) reviews are available eg. here, and you can even read an excerpt on this page.

Everyone can read this book, beginners on Debian (maybe not beginners on GNU/Linux) as well as experienced users, and it proves to be useful to both!

Other reviews are available here and here (just examples, more can be found!).