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)

More pattern matching examples

This section will present regular expressions that match more difficult patterns than the ones you have seen so far in this book. Just remember that regular expressions and pattern matching are practical subjects that you should learn by experimenting and sometimes failing, not by reading about them.

If you are very careful with regular expressions in Go, you can easily read or change almost all the system files of a Unix system that are in plain text format. Just be extra careful when modifying system files!

A simple pattern matching example

The example of this section will improve the functionality of the countIP.go utility, by developing a program that automatically detects the field with...