go语言系统编程，是英文版， What this book covers Chapter 1, Getting started with Go and Unix Systems Programming, starts by defining what systems programming is before talking about the advantages and the disadvantages of Go, the features of Go version 1.8, two handy Go tools named gofmt and godoc, as well as the various states of Unix processes. Chapter 2, Writing Programs in Go, helps you learn how to compile Go code and how to use the environment variables that Go supports, and understand how Go reads the command line arguments of a program. Then, we will talk about getting user input and output, which are fundamental tasks, show you how to define functions in Go, where the defer keyword is mentioned for the first time in this book and continue by discussing the data structures that Go offers using handy code examples. In the remaining sections of the chapter, we will discuss Go interfaces and random number generation. I am sure that you are going to enjoy this chapter! Chapter 3, Advanced Go Features, goes deeper and starts talking about some advanced Go features, including error handling, which is critical when developing systems software and error logging. Then it introduces you to pattern matching and regular expressions, Go Reflection, and talks about unsafe code. After that, it compares Go to other programming languages and presents two utilities, named dtrace(1) and strace(1), that allow you to see what happens behind the scenes when you execute a program. Lastly, it talks about how you can use the go tool to detect unreachable code and how to avoid some common Go mistakes. Chapter 4, Go Packages, Algorithms, and Data Structures, talks about algorithms and sorting in Go and about the sort.Slice() function, which requires Go version 1.8 or newer. Then it shows Go implementations of a linked list, a binary tree and a hash table. After that, it discusses Go packages and teaches you how to create and use your own Go packages. The last part of the chapter discusses Garbage