Author: Rahul

Java is a popular programming language for the application, system software, and web applications. The Oracle Java 8 and Java 11 required a subscription to download and use it. So we use OpenJDK for this installation of Java on the Fedora Linux system. This tutorial will help to install Java on Fedora Linux. Let’s follow the below simple steps for the installation. Step 1 – Search Java Packages The OpenJDK rpm packages are available under the AppStream repository. Use the following command to search available Java packages under configured DNF repositories. sudo dnf search openjdk Step 2 – Install Java…

In the world of software development and deployment, Java remains a cornerstone technology, powering everything from small-scale applications to large enterprise systems. For those using Amazon Linux, a popular choice in cloud environments for its stability and security, installing Java is a critical first step in setting up a development or production environment. This guide provides a clear, step-by-step approach to installing Java 21, Java 17, Java 11 and Java 8 on Amazon Linux 2, ensuring you have the necessary runtime environments to compile and run Java applications. Prerequisites Before proceeding, ensure you meet the following prerequisites: You have an…

Question – How to find the local IP address of CentOS 8 Linux system? 2 Ways to find IP address on CentOS 8Desktop edition or CentOS 8 Server edition? CentOS 8 is the latest available Linux operating system from the CentOS team. The desktop provides an attractive GUI for working with it. You can either use the command prompt to check the current IP address on your system or use a GUI option to view the local IP address on your system. Follow this tutorial to configure new IP on CentOS 8 desktop system. Method 1 – Check IP via…

Question – How to change or configure an IP address on CentOS 8? Steps to set the static IP address on your CentOS Desktop system As of today, The CentOS 8 Linux operating system is the latest available version of CentOS. The desktop provides an attractive GUI for working with it. You can easily change or set a static IP address on your Desktop system. Step 1 – Open Network Settings Login to your CentOS 8 Desktop system. After that open settings windows on your CentOS Desktop machine as showing in the below screen. In the left sidebar click on…

This tutorial will help you to Start/Stop and Restart the network services on a CentOS 8 or RHEL 8 Linux system. Here are the two methods available. We prefer method 1 to use. Method 1 – Using NetworkManager Service Use the followings commands to start/stop network service on your CentOS/RHEL 8 Linux system. sudo systemctl start NetworkManager.service sudo systemctl stop NetworkManager.service Use the followings commands to restart network service on your CentOS/RHEL 8 Linux system. sudo systemctl restart NetworkManager.service Method 2 – Using nmcli Tool The nmcli is the command-line utility for the managing NetworkManager on CentOS/RHEL 8 Linux system.…

There are two quick ways to configure an IP address on the network interface of the CentOS 8 operating system. The one is using nmtui command and another is by directly edition networking files. If you are not comfortable to edit configuration files, choose option 1 to set up networking in an interactive way. Method 1 – Using nmtui Tool Execute the following command to get access to an interactive way of network interface configuration. sudo nmtui Now, edit the default existing connection. In case no connection is available, use Activate a connection. You will see the list of Ethernet…

Fail2Ban is a powerful tool used to prevent unauthorized access to your server, typically by monitoring logs for too many failed login attempts and then banning the IP addresses associated with these attempts. However, sometimes legitimate users or services might get inadvertently blocked. To avoid this, it’s important to know how to whitelist (exclude) certain IP addresses. This article provides a step-by-step guide to help you whitelist an IP address in Fail2Ban. Step 1: Accessing Your Server To manage Fail2Ban, you need to access your server. This is typically done via SSH (Secure Shell). Ensure you have administrative or root…

As a Java developer, you may need to install Java on your CentOS/RHEL 8 server. Oracle Java 8 and Java 11 required a subscription to download and install. So we use OpenJDK for this installation. Installing Java can be a tricky process but you don’t have to worry because today I’m going to show you the easiest way to install Java on CentOS/RHEL 8! Step 1: Search Java Packages The OpenJDK rpm packages are available under the AppStream repository. Use the following command to search available Java packages under configured DNF repositories. sudo dnf search openjdk Step 2: Install Java…

The Red5 server is a powerful media streaming server that offers a wide range of features including live streaming, recording, shared objects, and live stream publishing. Here, we will go through the step-by-step process to install Red5 server on Ubuntu and Debian systems. Before we start, it’s important to note that you need a non-root user account with sudo privileges on your server to perform this installation. Also, ensure your server meets the minimum system requirements. Prerequisites Ubuntu (20.04, 22.04 or any LTS version) or Debian (10 or newer) A non-root user account with sudo privileges Java Development Kit (JDK)…

CentOS is a Linux operating system, which is a 100% compatible rebuild of the Red Hat Enterprise Linux operating system. A user can download and use this enterprise-level operating system free of cost. CentOS 8 Download Links Use the following links to download the latest CentOS 8.2 ISO images from CentOS official download page or its mirror pages. A torrent link is also available for all ISO images to download images using the torrent software. CentOS-Stream-8-x86_64-latest-dvd1.iso [10.5 GiB] CentOS-Stream-8-x86_64-latest-boot.iso [852 MB] The above links are a reference to the CentOS official webpage for the references of mirror links, They are…