Install nodejs through soft connection

When installing Node.js on the server, there are usually two methods. The first method is to download the binary and then install Node.js by unzipping and copying to the appropriate directory. This method works for most Linux distributions. However, it gets tricky when we want to install different versions of Node.js. To solve this problem, we can use soft connections to install Node.js.

Soft link refers to a special file type in the file system, which points to another file. Soft links can be created in different parts of the file system. Soft links provide a convenient method when you need to modify different versions of Node.js. When a new version of Node.js is released, we can create a symlink to point to the binaries for that version.

Here's how to use soft connections to install Node.js:

Step 1: Download and decompress the Node.js source file

First, we need to download Node.js source file. The source files of Node.js can be downloaded from the official website: https://nodejs.org/en/download/.

Select the version we want to install and download the tar.xz source file

The following is the download link for Node.js:

Node.js 12.x version:
https://nodejs.org/dist/v12.22.6/node-v12.22.6-linux-x64.tar.xz

Node.js 14.x version:
https:// nodejs.org/dist/v14.18.1/node-v14.18.1-linux-x64.tar.xz

Node.js 16.x version:
https://nodejs.org/dist/ v16.13.0/node-v16.13.0-linux-x64.tar.xz

After downloading, we need to unzip the file. You can use the following command to decompress the Node.js source file:

tar -xvf node-v12.22.6-linux-x64.tar.xz

Step 2: Create a soft connection

After decompressing the Node.js source file, we need to create a soft connection. We need to go to the node-v12.22.6-linux-x64 directory and create a soft connection. You can use the following command to accomplish this task:

ln -s /path/to/node-v12.22.6-linux-x64/bin/node /usr/local/bin/node
ln -s /path/to/node-v12.22.6-linux-x64/bin/npm /usr/local/bin/npm

Please remember to replace /path/to/ with Unzip Node in the above command The actual path to the .js source file. We can use the pwd command to view the path of the current directory. After creating the soft connection, we can check whether Node.js was successfully installed by entering the following command:

node -v

If successful, you should see the output of the Node.js version.

Step 3: Install npm package

We have successfully installed Node.js, but we also need to install the npm package manager. npm can be installed using the following command:

sudo apt-get update
sudo apt-get install npm

This will update the system and install the npm package manager into the system .

Step 4: Test the installation

We can use the following command to test whether Node.js and npm have been installed correctly:

node
npm

This will open the Node.js console and npm shell. Use the version command to confirm that the version is correct:

node -v
npm -v

After completing these steps, we have successfully installed Node.js using symlinks. Now we can use different versions of Node.js to run our application.

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