How to Install Go on Ubuntu 16.04

How to Install Go on Ubuntu 16.04

Overview

Go or Golang is a relatively new programming language originally developed by Google that gaining a lot of popularity for the last few years.

Kubernetes and Docker is sample of application written in Go. You can see list of application and companies using Go in GoUsers page.

You can also visit golang website to learn more about Golang.

Objective

In this tutorial we’ll learn how-to install Go programming language on Ubuntu 16.04 Xenial Xerus.

We’ll also learn creating Hello World Golang application, compile and run the application.

Install Go From Ubuntu Repository

Ubuntu 16.04 shipped with Golang 1.6. At the time of this writing the latest version of Go is 1.9 so this is a little bit behind, but if you’re ok with this we can install this using apt-get command

Let’s update our apt database first.


$ sudo apt-get update

Then install golang


$ sudo apt-get install golang

Install Golang Ubuntu 16.04

Now let’s check go version installed


$ go version
go version go1.6.2 linux/amd64

Install Go 1.9

Since Go from Ubuntu repository is not up to date we can install latest stable version of Go by downloading binary from Golang Download page.

Download Go Binary

Download Go 1.9 package using wget


$ wget -c https://storage.googleapis.com/golang/go1.9.linux-amd64.tar.gz

If you want to use curl you can use command below.


$ curl -C - https://storage.googleapis.com/golang/go1.9.linux-amd64.tar.gz -o go1.9.linux-amd64.tar.gz

Check downloaded file

Let’s check downloaded file using sha256sum command. Compare the hash output with hash on Golang download page.


$ sha256sum go1.9.linux-amd64.tar.gz
d70eadefce8e160638a9a6db97f7192d8463069ab33138893ad3bf31b0650a79  go1.9.linux-amd64.tar.gz

If the hash is not the same you need to redownload the package since the package might get corrupted on the way from server to your computer.

Extract Downloaded Go Archive

Extract downloaded file above using tar command.


$ tar xzf go1.9.linux-amd64.tar.gz

This process will create new directory named go.

Install Go in default location

The go binary distributions assume they will be installed in /usr/local/go directory. Let’s move the go directory to /usr/local and change the ownership of the directory to root user.


$ sudo mv go /usr/local/

Change ownership to root user and group.


$ sudo chown -R root:root /usr/local/go

Add go in PATH environment variable

There are multiple ways to add golang to our path, in this tutorial we’ll create new file /etc/profile.d/go.sh with contents below.


PATH=$PATH:/usr/local/go/bin

You can use command below to create and add contents to go.sh file.


$ echo "PATH=\$PATH:/usr/local/go/bin" | sudo tee /etc/profile.d/go.sh

Why we are using this approach? because all users on the system will have go on their path and cleaner and easier to track compared to changing path on /etc/profile file.

Hello Go from HowtoDojo

Let’s create new file called hello.go


package main

import "fmt"

func main() {
    fmt.Printf("Hello from HowtoDojo\n")
}

Compile the source code above using build options


$ go build hello.go

The build process above will create new file named hello. When we check the file type of this file we will get the file type is Linux ELF binary file.


$ file hello
hello: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, not stripped

To run the compiled file we can use command below


$ ./hello

If you don’t want to compile the go code you can use run options


$ go run hello.go

This will compile our source code and directly run the application. No binary will be created from this command.

Summary

In this tutorial we learned how-to install Go or Golang from Ubuntu repository.

We also learn to install latest version of Go by downloading binary from Go website.

We create our first Go application, compile and run the application. Have fun with Go!

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