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If you are a developer for the GNU/Linux system, this book will help you to:

Develop GNU/Linux software that works the way users expect it to.

Write more sophisticated programs with features such as multiprocessing, multi-threading, interprocess communication, and interaction with hardware devices.

Improve your programs by making them run faster, more reliably, and more securely.

Understand the preculiarities […]

Interesting reading at
http://www.cs.virginia.edu/~weimer/students/kinga-ms-paper.pdf

This is a good book for reading if you want to understand more on Java data structures.
Download Link
http://www.cs.williams.edu/~bailey/JavaStructures/Book_files/JavaStructures.pdf

This is a beginner guide to using Linux
Download Link
http://www.tuxradar.com/linuxstarterpack

Free ebook on JXTA
Download link
http://ftp.utcluj.ro/pub/users/civan/APD/ptLaborator/L10_JXTA/Mastering_jxta.pdf

Free chapter from the ASP.NET MVC ebook on how to build a full fledge application.

A good book for Unix programming
http://catb.org/~esr/writings/taoup/html/

From Apress at http://www.apress.com/resource/bookfile/1909

This book is freely available from
http://www.nltk.org/book

This guide is for software developers who would like to write and deploy P2P services and applications using JXTA technology and the Java Standard Edition programming language. It provides an introduction to JXTA technology, describes the JXTA network architecture and key concepts, and includes examples and discussion of essential programming constructs using JXTA JXSE.
Download Link
https://jxta-guide.dev.java.net/

This book presents a guided tour of the JXTA platform, including all of the critical information required to begin producing P2P solutions built on top of JXTA. Reference information on each of the JXTA protocols provides an understanding of the underlying principles of P2P networking, and examples built on the JXTA reference implementation provide the […]

The information in this document will help application developers and support engineers debug their Java applications on HP-UX systems.
Download Link:
http://docs.hp.com/en/5992-1918/5992-1918.pdf

This is a good book for reading even though you are not a C++ programmer.
Link:
http://www.oopweb.com/CPP/Documents/ThinkCScpp/VolumeFrames.html

O’Reilly has published a number of Open Books–books with various forms of “open” copyright–over the years. The reasons for “opening” copyright, as well as the specific license agreements under which they are opened, are as varied as our authors.
Link:
http://oreilly.com/openbook/

This is another good book for general reading.

Download Link
http://www.cs.toronto.edu/~hehner/aPToP/

This document covers many aspects of programming with C#, from naming, structural and formatting conventions to best practices for using existing and developing new code.
It’s the manual developed at Encodo Systems AG for developing with C# and .NET, but many of the concepts and ideas can be applied to any programming language. The intent of […]

A good for references - Algorithms for Programmers.
Download Link:
http://www.jjj.de/fxt/fxtbook.pdf

.NET Enterprise Solutions … Software Engineers on their way to Pluto
 

.NET Enterprise Solutions … Best Practices for the Connoisseur
 

.NET Enterprise Solutions … Interoperability for the Connoisseur
Downloadable here

The JSF Jumpstarter book is a short, tutorial introduction to JSF, suitable for JSF newbies.
In a short 65 pages, this book teaches you how to build dynamic web sites in Java using JavaServer Faces, using a hands-on, practical approach. Little or no prior experience in web development is necessary (though a bit of Java knowledge […]

Learn about major new features in SQL Server 2008 including security, administration, and performance.
Introducing Microsoft SQL Server 2008:

Chapter 1: Security and Administration
Chapter 2: Performance
Chapter 3: Type System
Chapter 4: ProgrammabilityChapter 5: Storage
Chapter 6: Enhancements for High Availability
Chapter 7: Business Intelligence Enhancements

Publisher:
Microsoft Press
Download:
http://csna01.libredigital.com/?urss1q2we6