Node.Js is Server Side JavaScript runtime environment which Runs on Google's V8 JavaScript Engine. Node.js is open-source and cross-platform which is licenced under MIT.
Node's is an Evented I/O for JavaScript and its goal is to provide an easy way to build scalable network programs.
In this post we will see how we can How to Install Latest Nodejs with Npm on Ubuntu 18.04 , Ubuntu 16.04 or Ubuntu 14.04 LTS operating system. This method can also be used for other Debian and Ubuntu based Linux distributions including: Linux Mint, Linux Mint Debian Edition (LMDE), elementary OS and others.
These older Ubuntu releases are now in Extended Maintenance (ESM): Ubuntu 14.04.6 LTS (Trusty Tahr) › Ubuntu 12.04.5 LTS (Precise Pangolin) › We are happy to provide hosting for the following projects via the cdimage server. While they are not commercially supported by Canonical, they receive full support from their communities. Installing Latest MariaDB Version on Ubuntu 18.04 from Repositories When installing MariaDB directly from its official repositories, you have the option to select a version for installation. The guide below focuses on the installation of MariaDB 10.4, the latest version available.
Version: Supported Packages: Start of ESM # of Years: End of Life: Ubuntu 18.04 ESM: To be announced: April 2023: 5 years: April 2028: Ubuntu 16.04 ESM: To be announced: April 2021.
Option 1 . Install Node.js from the Ubuntu repository
Check Node.js
First check installed Node.js version by following command
First check installed npm version by following command
Option 2 . Installing Using a PPA
Step 1 – Installing Prerequisites
We will need curl to add node.js ppa in our system. In addition we will also need to install python-software-properties package if its is not installed already.
Step 2 – Adding NodeJs PPA
Step 3 – Installing Node.js and NPM
After adding the node.js ppa we just need to give the node.js install command to install node.js. Npm will be installed automatically with node.js.
Step 4 – Check Node.js
First check installed Node.js version by following command
First check installed npm version by following command
Latest Lts Version Of Ubuntu
Create Simple Node.js server
Create a javascript file and name it as app.js
Now we will add a code for creating a simple Node.js sever which prins Hello World. Just add the following javascript code in your app.js file.
Node Run your Node.js server with the following commands
Node simply open the url http://127.0.0.1:3000/ in you browser.
it will print hello world
How to Install Nodejs and Npm on Ubuntu Linux
The Complete Node. js Developer Course (2nd Edition) : Learn Node. js by building real-world applications with Node, Express, MongoDB, Mocha, and more!
In this tutorial, we are going to show how to install the latest python on Ubuntu 18.04 machine using the terminal. Also, we will create a virtual environment and a simple program and run it. At the moment of writing this article, the latest stable version of python was 3.6.5 but the process of installing allows you to install the latest version by changing just the version number.
Note that Ubuntu 18.04 has python 3 preinstalled. However, we are going to show how to install it, update and uninstall.
How to install latest python
Before installing the latest version of python check the version of python currently installed on your machine. To do so you can run:
or
If there are several versions installed on your machine you can run the following command to view all versions:
If you want to install the latest version of python3 on your Ubuntu18 machine you can run:
or if it's already preinstalled, you can run the command below to update to latest version.
However, if you want to install it manually you can use the source code. To do so, follow the instruction below.
How to install python from source
To install the latest python from source, get the download link of the latest version from python's official website and download it to your Ubuntu machine. To do so you can run:
Once it is downloaded, extract the archive using the command below:
Change your directory to the newly created Python3.6.5 folder by running:
and run the configure script to check the build
Once the check has been completed run the following commands in the mentioned order to install python 3.6.5
However, if there wasn't need to use zlib1g-dev package before, you'll get an error of it's absence, which will look like this:
Newest Version Of Ubuntu
To install the missing package run:
After package installation run the sudo make and sudo make install commands once more. After installation is completed check the installed version with the following command:
Output must look like this:
Latest Version Of Ubuntu 18.4
How to update python to latest version
To update python to the latest version, you can run:
or if you have installed manually from source, you must uninstall the previous version and install the latest version or the one you want. The steps of how to do so are described in the section below.
How to uninstall python
To uninstall python from your Ubuntu 18 machine, run:
Note that you cannot mention major python3 version as it is being used by the system, but you can uninstall minor version which is preinstalled on your machine.
If you have installed python from source and need to update it, you must uninstall the previous one and repeat the installation steps which are described above in this article. As this method if installation locates python files in /usr/local/bin path, you must remove python files from that path. To do so you can run the following commands:
Once all files are removed you can proceed to the installation of newer version.
How to setup virtual environment for python3
Virtual environment for python is an isolated space on your computer for Python projects, which allows each of your projects to have its own set of dependencies and don't disturb any other project. Inside the virtual environment, you can use python and pip commands instead of python3 and pip3 accordingly. Outside of an environment, you must use python3 and pip3 commands for running Python 3.
Following the steps below you can setup a virtual environment for python3 and use it to develop applications.
Call of duty studios. First of all you need to check if pip (python package manager) installed along with your python installation. If you installed python from source, pip is being installed along with python. To check pip version run:
Output must look like the one below:
Descargar open shot video. If pip isn't installed on your machine, run the following command to install it:
Once pip is installed you can run the following command to install python packages:
Besides pip you need some more packages that need to be installed as prerequisites. To install them all, run:
Once all prerequisites are installed you can proceed to virtual environment creation. To do so follow the steps below:
Install python3 virtual environment package by running the command below:
Create folder for environments and change your working directory to it. To do so, run:
Create a virtual environment and give it a name which will best describe the environment purpose:
Actually, the command above create a directory with needed files. To view them type:
The output must look like the one below:
To be able to use the newly created environment you must run:
After activating the environment you must see the environment name in brackets in front of your prefix. E.g.
To leave the environment just type the command below:
How to create simple python application within the virtual environment
After virtual environment is created we can create a simple application inside it and test if it works. Our application will output 'I am new to Python!' every time we run it. First of all we need to activate the environment or, if you want, enter inside the virtual environment. To do so, change your working directory to environments folder and run the command to activate the desired environment:
Create a file with .py extension via your favorite text editor and give it a name:
Add the following text in the file and save it:
Now every time you run your application with this command:
you'll see the output:
Read Also:
Python 3 comes already installed with Ubuntu 18.04 and it's very easy to update it to latest once there is a need. However, if you are using Ubuntu 18's minimal version you must install python manually and there are two ways to install it. One is using apt, which will install minimal packages of python3 and the other using source code which will install the full version of python 3.
