What is NodeJS

If you are an expert developer or already have some experience with it, you will know it is NodeJS. However, in case you are starting with it, it is a good idea to know what NodeJS is first.

NodeJS is a technology that allows running Javascript on the server-side using Google’s V8 engine. It is a real revolution in the way web applications are developed because it reduces the asymmetry of client and server performance.

Many important forms such as Linkedin or eBay were created using this technology. This shows us the power of NodeJS.

An advantage of NodeJS is that its syntax is similar to that of Javascript and therefore its learning curve decreases a lot.

So, let us start.

Install NodeJS on FreeBSD 12

First of all, all the commands we will use require you to be root. So it is a good idea to have sudo enabled and not work directly with the root user.

How to enable sudo on FreeBSD 12?

Now it is also convenient to do a system upgrade. Not only to install security patches but also to refresh the repositories.

:~$ sudo pkg update

The official FreeBSD repositories include NodeJS. So first we’ll search for them.

:~$ sudo pkg search node
bitcoinnodestats-g20171121_1   Basic Bitcoin node status and statistics web application
gstreamer-plugins-annodex-0.10.31_2,3 Gstreamer annodex CMML plugin
kadnode-2.2.5_1                P2P name resolution daemon
leafnode-1.11.11               NNTP package for offline news caching and reading
monodevelop-7.6.11.7_2         IDE for the .NET platform
munin-node-2.0.52              Node-specific part of Munin
node-13.3.0                    V8 JavaScript for client and server
node-thrift-0.11.0             Node.js bindings for the Apache Thrift RPC system
node10-10.17.0                 V8 JavaScript for client and server
node12-12.13.1                 V8 JavaScript for client and server
node8-8.16.2                   V8 JavaScript for client and server (8.x LTS)
node_exporter-0.18.1           Prometheus exporter for machine metrics
npm-node10-6.12.1              Node package manager
npm-node12-6.12.1              Node package manager
npm-node8-6.12.1               Node package manager
p5-Tree-DAG_Node-1.31          Super class for representing nodes in a tree
p5-Tree-Node-0.08_2            Memory-efficient tree nodes in Perl
p5-WebService-Linode-0.29      Perl Interface to the Linode.com API
p5-XML-Node-0.11_1             Perl5 module to extend and simplify XML::Parser
p5-XML-NodeFilter-0.01_1       XML::NodeFilter is an object that know how to "filter out" nodes
py27-certbot-dns-linode-1.0.0  Linode DNS Authenticator plugin for Certbot
py27-nodeenv-1.3.3             Node.js virtual environment builder
py37-certbot-dns-linode-1.0.0  Linode DNS Authenticator plugin for Certbot
py37-nodeenv-1.3.3             Node.js virtual environment builder
yarn-node10-1.19.1             Package manager for node, alternative to npm
yarn-node12-1.19.1             Package manager for node, alternative to npm
yarn-node8-1.19.1              Package manager for node, alternative to npm

As you can see from the screen output, there are several versions of NodeJS in the official repositories. At the time of writing this post, series 12 is the latest LTS and therefore the most reliable option.

So let’s install NodeJS with the following command:

:~$ sudo pkg install node12
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 5 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
	node12: 12.13.1
	libnghttp2: 1.40.0
	c-ares: 1.15.0_1
	libuv: 1.34.0
	icu: 65.1,1
Number of packages to be installed: 5
The process will require 86 MiB more space.
18 MiB to be downloaded.
Proceed with this action? [y/N]:

Now check the version of NodeJS installed with the following command:

:~$ node --version
v12.13.1

It is now convenient to install NPM.

Again, search for the package NPM.

:~$ sudo pkg search npm
Password:
npm-6.12.1                     Node package manager
npm-node10-6.12.1              Node package manager
npm-node12-6.12.1              Node package manager
npm-node8-6.12.1               Node package manager

As you can see in the image, there are several versions of NPM. Each of them depends on a specific version of NodeJS. Since we have installed NodeJS version 12, then we have to install NPM for that version.

:~$ sudo pkg install npm-node12
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
The following 4 package(s) will be affected (of 0 checked):

New packages to be INSTALLED:
	npm-node12: 6.12.1
	python27: 2.7.17_1
	libffi: 3.2.1_3
	gmake: 4.2.1_3

Number of packages to be installed: 4

The process will require 90 MiB more space.
15 MiB to be downloaded.

Proceed with this action? [y/N]:

And that is it. Now you can use NodeJS without problems.

Conclusion

NodeJS is a rather interesting technology that is becoming increasingly popular in large web projects. So it’s always good to have it in our system. Today you have learned that installing it on FreeBSD 12 is quite simple.

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Downloading node.js

The first thing you have to do is go to the node.js website and download the LTS version. At the time of writing this article, the version is 12.13.1

Then double click on the file to launch the wizard. Press Next to begin the installation.

Next, you accept the terms of the license.

Please set the installation directory. You can leave it by default or choose a different one.

Now, there are components to install. I recommend that you leave it by default as it is the most comfortable option.

The following table offers a very interesting option. In fact, the wizard offers to install some tools necessary for the operation of the program. Additionally, this will be done automatically and unattended. Please note that if you do not check this option, you will have to install the tools manually.

After the previous settings have been made, the wizard will start the installation.

The wizard will start the installation of the program.

After a few seconds, the wizard will indicate that your work was successful and that the program has been installed.

Installing the extra tools

Once you press Finish to close the wizard, the installation of the extra tools will begin. Forthwith, a window will pop up indicating the installation of the Node.js Native Modules Script Installation. Just press any key to continue:

Next, it is explained that the script downloaded and installed Chocolatey to install the packages. Press any key to continue.

Once the above steps are completed, a PowerShell window will pop up that will download and install the packages through Chocolatey. As already mentioned, this is an automatic and unattended process. However, if an error occurs, just update Windows and run the installer again.

Installing Node.js using Chocolatey.

It is also possible to install Node.js on Windows 10 using the Chocolatey repository manager. To find out how to install and use it, please check out our tutorial. Well, to install just run this command in PowerShell.

 cinst nodejs install 

If the installation is successful, you will get the message of the successful installation of Node.js

Testing Node.js installation

After installing Node.js, let’s try it out. With that intention, open a CMD and type the following command:

node -v
npm -v

With these commands, we are seeing the version of Node.js and the version of the NPM package manager.

Testing the operation of Node.js

To check the functioning of the Node.js server and that it effectively executes javascript code, we will do the following. First, create a folder with the name node. Thereupon, place it in any direction, e.g. on the Documents.

Then open the text editor of your choice and create a file with the following content:

console.log('correctly installed Node');

After adding the text, proceed to save it with any name in the folder called node. In this case, the name will be test. The most important thing is that the file extension should be .js At the end the file would be named test.js

Then open a Command Prompt and navigate to the folder location using the following commands:

cd documents
cd node

It then executes the file we just created, using the following command:

node test.js

Finally, we have seen how to install Node.js on Windows 10. From now on, you can use this powerful Java execution environment. That’s all for now, I hope you enjoyed it.

The post How to install node.js on Windows 10 appeared first on Linux Windows and android Tutorials.

Step 1: Update the system

First of all update your system by running the given command.

sudo apt -y update && sudo apt -y upgrade

Step 2: Install Node.js 13 on Ubuntu / Debian / Linux Mint

You can install node.js 13 after updating the system and then installing the required repository.

curl -sL https://deb.nodesource.com/setup_13.x | sudo bash -

After creating directory, you can move forward to Install Node.js 13 on Ubuntu / Debian / Linux Mint.

sudo apt-get install -y nodejs

You can check your installed version by following this command.

node -V

For Installing Development tools, run the following command as a root or with sudo privileges.

sudo apt-get install gcc g++ make

For yarn package Installation follow the below step

curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -

echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt-get update && sudo apt-get install yarn

The post How To Install latest node.js 13 on Ubuntu 19.04 / Debian / Linux appeared first on Linux Windows and android Tutorials.

Thanks to its simplicity and ease of use, node.js is reaching great levels of popularity and is even positioned as a direct rival to PHP.

Node.JS has its own server and maintains a single instance of it, this means a much more efficient use of resources and a much faster response to simultaneous connections. It is multiplatform allowing its installation in almost any operating system in pc.

For this tutorial we will use Ubuntu 18.04 to install node.js.

3 ways to reach the goal!!

There are three ways to install node.js. The choice will depend on your level of knowledge and what you really want for your computer. The options are 3: use the official repositories o ubuntu, use the external PPA or install it via NVM.

1.- Using the official Ubuntu repositories

This method is safer, more stable and easier but does not provide the flexibility that many would like. This is because over time the installed version could be considered obsolete.

First we must open a terminal. Then we proceed to update the system in order to have the latest security patches.

sudo apt update && sudo apt upgrade

Next we proceed to install node.js from the official repositories with:

sudo apt install nodejs

This will install node.js. However, in many cases you need your NPM package manager which is not installed by default with this method. For this we write:

sudo apt install npm

Finally we can consult the installed version of node.js

nodejs -v

2.- Using PPA

For more recent versions of node.js we usually use this installation method. Recent versions of node.js provide us with security updates as well as more improvements than ever before. If you have installed node.js before, you must uninstall it.

First we must add the repository in question. To do this in a terminal, we write:

cd ~
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

In this case we chose version 10.x because it is a higher version than the official repositories, but you can check the rest of the versions supported by the PPA here

Then we proceed to install it:

sudo apt install nodejs

And finally we check the installed version.

nodejs -v

With this method, there is no need to install npm separately. In addition we install a higher version of node.js

3.- Installing node.js using NVM

Using NVM we can have more flexibility to install node.js because we can choose which version to install from a quick and easy way.

First we can check on your github page that we can download NVM in two ways, using wget or curl. We’ll use curl.

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash

At the end of the installation, you will create a hidden nvm folder. Now to use nvm we must do:

source ~/.profile

Now we can install different versions of node.js

nvm ls-remote

We will install the latest stable version:We will install the latest stable version:

nvm install 10.15.3

With the command above we also install the npm.

We proceed to verify the installed version.

node -v

As a conclusion we can say that node.js is a very popular implementation in the field of web development, and its installation is really easy in Ubuntu 18.04 which in turn is a GNU/LINUX distribution widely used by developers around the world.

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