centos golang installation

Install Golang on CentOS

Go is a programming language developed by Google. It has good concurrency and efficient performance. It is also an increasingly popular language in modern web application development. . This article will introduce the steps to install and configure Golang on CentOS.

1. Download Golang

First, you need to go to the official website to download the Golang installation package. In the download page, you can select the Golang version you want to download and the installation package for CentOS.

wget https://golang.org/dl/go1.17.2.linux-amd64.tar.gz

This link is the installation package of Golang 1.17.2. We need to use the wget command to download it to the server.

2. Installing Golang

After the download is complete, extract the tar.gz file to the /usr/local directory.

tar -C /usr/local -xzf go1.17.2.linux-amd64.tar.gz

Then create a new file named go in the /etc/profile.d/ directory .sh, used to define Golang environment variables.

touch /etc/profile.d/go.sh

Now, use the vim editor to open the file and add the following lines of code:

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

Save the file and close the editor.

When you log in, since the /etc/profile.d directory is included in the PATH environment variable, its script is executed when the terminal is started. This means that Golang will be registered in the PATH variable and will work normally in subsequent operations.

3. Check Golang environment settings

To verify that Golang has been installed correctly, enter the following command in the terminal:

go version

If the installation process was correct, you should see output similar to the following:

go version go1.17.2 linux/amd64

If you do not see output for this version, or If you see an error message similar to "command not found", please check the Golang environment variables.

4. Create and run your first Golang program

Now that Golang has been installed and the environment is set up correctly, here is your first program.

Create a file named hello.go and open it with vim editor.

touch hello.go
vim hello.go

Enter the following code in the file:

package main

import "fmt"

func main() {

fmt.Println("Hello, World!")

}

After saving and closing the file, use the go run command to run the program.

go run hello.go

You will see the following output:

Hello, World!

5. Summary

This article outlines the steps to install and configure Golang on CentOS, including downloading the installation package, installing Golang, checking the environment settings and writing the first program. Golang is not only easy to learn and understand, but it also has very good performance when handling high-concurrency, high-load, and high-performance web applications. If you are looking for a flexible and powerful language for web application development, Golang is a very good choice.

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