How to set up linux in golang

Golang is a popular programming language with a high degree of efficiency and flexibility. It was originally developed by Google and has the advantages of fast compilation, easy reading and maintenance. Many developers use Golang to create highly reliable and efficient applications, so this article will explain how to set up Golang in a Linux environment.

1. Install Golang

To install Golang in a Linux environment, you need to perform the following steps:

1. Use the wget command to download the Golang binary file. The download address of the latest version can be found on the Golang official website.

wget https://golang.org/dl/go1.16.4.linux-amd64.tar.gz

2. Create a new folder and extract the downloaded Golang binary file into the folder:

sudo tar -xvf go1.16.4.linux-amd64.tar.gz -C /usr/local

3. Set environment variables for Golang and execute the following command:

vim ~/.bashrc

4. Add environment variables in the .bashrc file:

export GOPATH=$HOME/go
export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin

5. Make the environment variables take effect immediately

source ~/.bashrc

6. Verify the installation results and check the installation by entering the following command Whether it is successful

go version

If everything is normal, the Golang version information should be output, indicating that the installation is successful.

2. Create applications using Golang

The following are some useful commands to create, compile and run Golang programs.

1. Create a new Golang project

You can use the following command to create a new Golang project.

mkdir hello
cd hello
go mod init hello

2. Create a main file

Create a new file hello.go in the hello directory:

vim hello.go

3. Enter the following code

package main

import "fmt"

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

4. Compile and run the program

Use the following command to build and run the hello.go program:

go build
./hello

If everything goes well, "Hello, World!" should be output.

3. Use Golang dependency management

Since dependency management can be easily managed, the following are some useful commands:

1. Use Go Modules

Go Modules can be used to manage dependencies of Golang projects. Run the following command to enable it:

export GO111MODULE=on

2. Add dependencies

Command:

go get github.com/gorilla/mux

3. In a new project Using Dependencies in

You can use dependencies in your project, you just need to slightly adjust the import path.

For example, if you save the dependency to the path github.com/gorilla/mux, you can introduce the dependency as follows:

import "github.com/gorilla/mux"

In this way, you can use all functions of mux and method.

4. Use Golang for Web development

Golang provides many libraries and frameworks for Web development. The following are some useful libraries and frameworks:

1.Gin Framework

Gin is a lightweight web framework that is very simple to use. Here's how to create a simple web application using the Gin framework.

Command:

go get -u github.com/gin-gonic/gin

Code:

package main

import "github.com/gin-gonic/gin"

func main() {
    r := gin.Default()
    r.GET("/", func(c *gin.Context) {
        c.JSON(200, gin.H{
            "message": "hello world",
        })
    })
    r.Run()
}

2.Beego Framework

Beego is a popular web framework that provides many useful libraries and Tools to help you build web applications faster.

Command:

go get github.com/astaxie/beego

Code:

package main

import "github.com/astaxie/beego"

func main() {
    beego.Run()
}

The above is the basic content of Golang setting up, creating applications, dependency management and web development in the Linux environment. I hope it can be useful to you. Golang learning and development help.

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