Book Image

Go Systems Programming

Book Image

Go Systems Programming

Overview of this book

Go is the new systems programming language for Linux and Unix systems. It is also the language in which some of the most prominent cloud-level systems have been written, such as Docker. Where C programmers used to rule, Go programmers are in demand to write highly optimized systems programming code. Created by some of the original designers of C and Unix, Go expands the systems programmers toolkit and adds a mature, clear programming language. Traditional system applications become easier to write since pointers are not relevant and garbage collection has taken away the most problematic area for low-level systems code: memory management. This book opens up the world of high-performance Unix system applications to the beginning Go programmer. It does not get stuck on single systems or even system types, but tries to expand the original teachings from Unix system level programming to all types of servers, the cloud, and the web.
Table of Contents (13 chapters)

Developing find(1) in Go

This section will teach you the necessary things that you need to know in order to develop a simplified version of the find(1) command-line utility in Go. The developed version will not support all the command-line options supported by find(1), but it will have enough options to be truly useful.

What you will see in the following subsections is the entire process in small steps. So, the first subsection will show you the Go way for visiting all files and directories in a given directory tree.

Traversing a directory tree

The most important task that find(1) needs to support is being able to visit all files and sub directories starting from a given directory. So, this section will implement this task...