Gain insights into writing professional command-line programs in Go. Delve into structuring Go programs, writing idiomatic code, testing effectively, and impressing users and managers.

write professional command  - line programs in Go.png

data.tar.gz

Go run main.go

Run main.sh

Run go test

Run go test2

GoLive

GoLiveTesting

Multi-git-Custom

Pre+main-v0.2

Main_to_cmd

Run go test-Coverage

Ginkgo

Ginkgo-BDD

Ginkgo-e2e

Cobra

Cobra-NoInstall

Cobra-NoInstall-FullApp

Final_Cobra_Multi-git

Viper

Viper-etcd

Viper-Cobra

SelfUpdating

Make

Special build

Embedding_Data

Go run main.go-Simple

In this course you will learn why Go is an awesome language for writing command-line programs. You will learn how to structure your Go programs, how to write idiomatic Go code, how to test your programs and how to amaze your users, peers and managers. 

The focus is on command-line programs in order to keep the course down to earth, but most of the principles and best practices you will learn apply to any Go program.

Write Professional Command-line Programs in Go

## Dynamic configuration with Viper

As you recall, one of the primary reasons for using remote configuration is its support for dynamic configuration changes without disrupting the running program.


> Click "Run" on the application below, and `etcd` will start automatically. Then, open **another** terminal tab and enter the `cd /usercode && crypt set -plaintext /config/config.toml ./config.toml && go run main.go` command to run the main file. Now, open another terminal tab and enter the `crypt set -plaintext /config/config.toml /usercode/config2.toml` command and see the main.go will update new configuration after 3 seconds.

# Dynamic configuration with Viper

As you recall, one of the primary reasons for using remote configuration is its support for dynamic configuration changes without disrupting the running program.


In this lesson, we'll implement dynamic configuration with Viper and discuss its limitations.

Dynamic Remote Configuration with Viper

Overview

Restructuring multi-git

Testing 1,2,3...

Adding Smart Command-Line Parsing

Adding Advanced Configuration

Adding Bells and Whistles

Summary

Dynamic Remote Configuration with Viper

Dynamic configuration with Viper