What really sets this book apart, in my opinion, is just how readable it is. I haven't run across anything with quite the same combination of style and depth for Linux.
You could read through something like The Linux Programming Interface [1] or Understanding the Linux Kernel [2] and with effort extract much of the same information, but without the pace/structure/commentary that I think this book does so well.
Thing is, conceptually much of what you'll read in this book will be applicable to Linux just fine and having read it will make it far easier to grok how/where the two differ.
To be comparably authoritative, I guess a book like this for Linux would have to be written by Linus Torvalds or another senior Linux kernel developer.
