Steps to build Golang environment on Linux system

Golang is an open source programming language, which is characterized by efficiency, simplicity, and reliability. It is not difficult to set up a Golang environment. This article will introduce the steps to set up a Golang environment on a Linux system so that you can get started easily.

1. Download the installation package
   First, you need to visit the official website (https://golang.org/dl/) to download the appropriate installation package. Choose the latest version of the Golang installation package. This article takes version 1.15.3 as an example. In a Linux environment, select an installation package in tar.gz format.
2. Unzip the installation package
   Open a terminal window (also called a command line interface) in your Linux environment, and then enter the directory where you downloaded the installation package. Use the following command to decompress the tar.gz installation package:

$ tar -C /usr/local -xzf go1.15.3.linux-amd64.tar.gz

The above command will decompress the compressed package and install it to the "/usr/local/go" path. The installation path here is adjustable and depends on your installation path in the Linux environment. You can also specify the decompression path through the parameter "-C" of the command "tar -C", such as:

$ tar -C /opt -xzf go1.15.3.linux-amd64.tar.gz

3. Configuring environment variables
   In order to use the Golang environment correctly, you need to configure some environment variables . Open your terminal and enter the following command:

$ export PATH=/usr/local/go/bin:$PATH

To persist this environment variable, you can modify the "~/.bashrc" or "~/.zshrc" file. Add the following statement at the end of the file:

export PATH=$PATH:/usr/local/go/bin

Then restart your terminal window.

4. Check the Golang environment
   Now that you have completed setting up the Golang environment, you need to ensure that the installed program can be used normally. You can open a terminal window and enter the following command:

$ go version

If the installation is successful, you should be able to see the following output:

go version go1.15.3 linux/amd64

This means you have successfully installed Golang environment.

5. Write Golang programs and run them
   You can now write programs using Golang and run them from the command line. The following is a simple Golang program, the code is as follows:

package main

import "fmt"

func main() {
    fmt.Println("Hello, world!")
}

Save the above code to a file named "hello.go", and compile it and generate an executable binary file through the following command :

$ go build hello.go

This command will generate a binary executable file named "hello" in the same directory. Now you can run the program in the command line:

$ ./hello

If you see the following output:

Hello, world!

Congratulations, you have written and successfully run a program using Golang.

Summary
Now, you already know how to set up a Golang environment in a Linux environment. With these simple steps, you can start writing programs in this efficient, simple, and reliable programming language. Hope this article is helpful to you.

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