Install Jenkins on Ubuntu 20.04 - Step by Step Process ?

This article covers how you can install Jenkins on Ubuntu OS. For further information about Jenkins, visit its official documentation.

Jenkins is an open-source automation server that can be used to easily set up continuous integration and continuous delivery (CI/CD) pipelines.

Continuous integration (CI) is a DevOps practice in which team members regularly commit their code changes to the version control repository, after which automated builds and tests are run. 

Continuous delivery (CD) is a series of practices where code changes are automatically built, tested, and deployed to production.

To install Jenkins on Ubuntu 20.04 as a standalone service:

1. Run the following commands as root or user with sudo privileges or root to install OpenJDK 11:

$ sudo apt update
$ sudo apt install openjdk-11-jdk

2. Once the installation is complete, verify it by checking the Java version:

# java -version

3. Import the GPG keys of the Jenkins repository using the following wget command:

# wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

4. Next, add the Jenkins repository to the system with:

# sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

5. Once the Jenkins repository is enabled, update the apt package list and install the latest version of Jenkins by typing:

# sudo apt update
# sudo apt install jenkins

6. Jenkins service will automatically start after the installation process is complete. You can verify it by printing the service status:

# systemctl status jenkins

Install ReactJS on Ubuntu 20.04 - Step by Step Process ?

This article covers the method of using ReactJS on a Ubuntu 20.04 system by installing NodeJS and required dependencies on it. 

Finally, we demonstrated to you the usage of ReactJS by creating a sample application.

To install npm on Ubuntu Linux, login into your server as a sudo user and invoke the command below:

$ sudo apt install npm

Once the installation is complete, you can verify the version of npm installed using the command:

$ npm --version

To install the tool, run the following npm command:

$ sudo npm -g install create-react-app

Once installed, you can confirm the version of installed by running:

$ create-react-app --version

How to Install ReactJS on Ubuntu 20.04? 

React or Reacts is a front-end JavaScript library that is used to develop UI components. It is managed by Facebook and open-source developers.

It makes it effortless to create and maintain interactive UI specifically for single-page applications. 

Many developers are using it because of its flexibility, integrity, and its feature to bring Html directly into JS. 

Many well-known corporations such as Facebook, Uber, and Instagram used the ReactJS framework to create interfaces.

To install npm, open up the terminal and type the following command:

$ sudo apt install npm

To verify if the installation is completed successfully, check the npm version through the command:

$ npm --version