Book Image

Hands-On System Programming with Go

By : Alex Guerrieri
Book Image

Hands-On System Programming with Go

By: Alex Guerrieri

Overview of this book

System software and applications were largely created using low-level languages such as C or C++. Go is a modern language that combines simplicity, concurrency, and performance, making it a good alternative for building system applications for Linux and macOS. This Go book introduces Unix and systems programming to help you understand the components the OS has to offer, ranging from the kernel API to the filesystem. You'll then familiarize yourself with Go and its specifications. You'll also learn how to optimize input and output operations with files and streams of data, which are useful tools in building pseudo-terminal applications. You'll gain insights into how processes communicate with each other, and learn about processes and daemon control using signals, pipes, and exit codes. This book will also enable you to understand how to use network communication using various protocols, including TCP and HTTP. As you advance, you'll focus on Go's best feature - concurrency, which will help you handle communication with channels and goroutines, other concurrency tools to synchronize shared resources, and the context package to write elegant applications. By the end of this book, you will have learned how to build concurrent system applications using Go
Table of Contents (24 chapters)
Free Chapter
Section 1: An Introduction to System Programming and Go
Section 2: Advanced File I/O Operations
Section 3: Understanding Process Communication
Section 4: Deep Dive into Concurrency
Section 5: A Guide to Using Reflection and CGO


This chapter provided a general overview of the main Unix components and how they interact with each other. We started with memory management and how it works in Unix, understanding concepts such as pagination and swap.

Then we analyzed the filesystem, taking a look at the support from modern operating systems, and explained the difference between the existing file types: files, directories, and hard and soft links.

After learning about the concept of inode, we took a look at the structure of a directory in a Unix operating system and explained how to navigate and interact with the filesystem, as well as how to mount and unmount other partitions.

We moved on to processes, running applications in Unix, and their structure and attributes. We analyzed process life cycle, from its creation through fork or exec, to its end or termination with the kill command...