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)

Dealing with files in Go

An extremely important task of an operating system is working with files because all data is stored in files. In this section, we will show you how to delete and rename files, and in the next section, Developing find(1) in Go, we will teach you how to search directory structures in order to find the files you want.

Deleting a file

In this section, we will illustrate how to delete files and directories using the os.Remove() Go function.

When testing programs that delete files and directories be extra careful and use common sense!

The rm.go file is a Go implementation of the rm(1) tool that illustrates how you can delete files in Go. Although the core functionality of rm(1) is there, the options of rm...