Install golang offline

Golang is a fast, reliable, and simple programming language. Because of its excellent performance and ease of use, it has become one of the preferred languages ​​​​for software developers. However, when developing with Golang, we usually need to install the official Golang environment to be able to compile and run the code locally. In many cases, we may not have direct access to the official website or may not want to install Golang online. Therefore, this article will introduce how to install the Golang environment offline.

1. Download the Golang installation package

First, we need to download the Golang installation package from the official website. In order to achieve offline installation, we need to download all required components and save them locally.

Multiple versions of Golang are provided on the official website. We can choose to download the corresponding version according to our needs. In this case, we choose to download the latest version of Golang (currently 1.17).

In the download page, we can choose to download the installation package suitable for our own operating system, such as Windows, Linux or Mac OS X version installation package. Note that we need to download the installation package suitable for our own CPU architecture, such as 64-bit or 32-bit version.

After the download is complete, we can save the installation packages locally, or upload them to our own server for offline installation on other machines.

2. Install the Golang environment

Once we have prepared the required installation packages, we can start installing the Golang environment. Here are the steps to install Golang on Windows and Linux systems.

Install Golang on Windows:

1. Double-click the downloaded Golang installation package to open the installation program
2. In the installation program, click the "Next" button to accept the default The installation options
3. After the installation program is completed, open a command prompt and enter the following command:

go version

If the installation is successful , we will see the version number of Golang.

Install Golang on Linux:

1. Use the scp command to copy the downloaded installation package to the Linux machine where we want to install Golang
2. Unzip the installation package, For example:

tar -C /usr/local -xzf go1.17.linux-amd64.tar.gz

3. Change the Golang bin Directory is added to the PATH environment variable, for example:

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

4. in the terminal Enter the following command to test whether Golang is successfully installed:

go version

If the installation is successful, we will see the version number of Golang.

3. Configure the Golang environment

After installing Golang, we need to perform some simple configurations to ensure that the Golang environment can work properly.

First, we need to set the GOROOT environment variable. GOROOT refers to the root directory of Golang installation, usually /usr/local/go or C:Go. We can set the GOROOT environment variable in the following ways:

On Windows:

1. Select "System" in "Control Panel" and then "Advanced System Settings"
2. In the "Advanced" tab, click the "Environment Variables" button
3. In the "System Variables", click the "New" button
4. Enter the name as "GOROOT" and the value as Golang installation path

On Linux:

1. Open the ~/.bashrc or /etc/bashrc file and add the following lines:

export GOROOT=/usr/local/go

2. Execute the following command to make the environment variables take effect in the current terminal session:

source ~/.bashrc or source /etc/bashrc

In addition, we also need to set GOPATH to a directory we like. GOPATH is a directory that contains all Golang libraries and binaries. We can set the GOPATH environment variable in the following ways:

On Windows:

1. Select "System" in "Control Panel" and then "Advanced System Settings"
2. In the "Advanced" tab, click the "Environment Variables" button
3. In the "User Variables", click the "New" button
4. Enter the name as "GOPATH" and the value as Our favorite directories

On Linux:

1. Open the ~/.bashrc or /etc/bashrc file and add the following lines:

export GOPATH=$HOME/go

2. We can create a directory as GOPATH, for example:

mkdir $HOME/go

3. Execute the following command to make the environment variables take effect in the current terminal session:

source ~/.bashrc or source /etc/bashrc

After setting the environment variables, we can start writing and running code using Golang.

4. Summary

In this article, we introduced how to download the Golang installation package, install the Golang environment offline, and configure Golang's environment variables. Through the above steps, we can install Golang in an offline environment, compile and run the code easily and quickly, and avoid the inconvenience of online downloading and installation. If you are a Golang developer, I hope this article can help you.

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