From the description on Amazon: "The first volume of Unix Network Programming, Networking APIs: Sockets and XTI covers just about everything you need to know to get your applications to talk to other computers on a network. In this second volume, W. Richard Stevens discusses what you need to know to get your applications to talk to other applications running on your computer. There's a big difference, and Stevens covers it well."

The original book provided an epiphany for me on pipes, and processes, and how the underpinnings of UNIX worked, even though I'd thought before that I understood it all. This is the best possible explanation of how the operating system hangs together, and it's still timely and worthwhile.

I was surprised to not see that this had been updated after Stevens' death, since Volume 1 is now on the 3rd Edition, as is Advanced Programming in the UNIX Environment. I suppose it just didn't change in the same way. ( )