Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
In world of cybersecurity, there are two commonly used tools for enforcing mandatory access control (MAC) policies on Linux systems: AppArmor and SELinux. Both of these tools provide a layer of security by limiting actions that a particular process or application can take on a system. In this article, we will be taking a comprehensive look at both AppArmor and SELinux and compare their features and capabilities. Overview of AppArmor and SELinux AppArmor and SELinux are both Linux security modules (LSMs) that can be used to protect a system from various security threats. They are designed to restrict actions of ... Read More
When it comes to web servers, Apache and Nginx are two of most popular choices available today. Both of these web servers have their own strengths and weaknesses, and choosing between them depends on your specific needs and requirements. In this article, we will compare Apache and Nginx, looking at their features, performance, security, and ease of use, to help you make an informed decision. Introduction to Apache and Nginx Apache, also known as Apache HTTP Server, is an open-source web server software that has been around since 1995. It is widely used on Linux and Unix-like operating systems, as ... Read More
If you're hosting multiple websites on a single server, you'll want to set up virtual hosts to keep each site separate. Virtual hosting can be IP-based or name-based. In this article, we'll discuss how to set up virtual hosting in RHEL/CentOS/Fedora using both IP-based and name-based virtual hosts. What is Virtual Hosting? Virtual hosting is a method of hosting multiple websites on a single server. It's an essential technique for saving resources and costs for businesses. When you host multiple websites on a single server, you want to ensure that each site has its own unique identity and is separated ... Read More
In world of big data processing, Apache Storm and Apache Spark are two popular distributed computing systems that have gained traction in recent years. Both of these systems are designed to process massive amounts of data, but they have different strengths and weaknesses. In this article, we will do a side-by-side comparison of Apache Storm and Apache Spark and explore their similarities, differences, and use cases. What is Apache Storm? Apache Storm is an open-source distributed computing system that is used for real-time stream processing. It was developed by Nathan Marz and his team at BackType, which was later acquired ... Read More
Apache Hadoop is a popular big data framework that allows organizations to store, process, and analyze vast amounts of data. architecture of Hadoop is designed to handle large amounts of data by using distributed storage and processing. In this article, we will explain architecture of Apache Hadoop and its various components with diagrams. Introduction to Apache Hadoop Apache Hadoop is an open-source software framework used for storing and processing large amounts of data in a distributed environment. It was created by Doug Cutting and Mike Cafarella in 2006 and is currently maintained by Apache Software Foundation. Hadoop is widely used ... Read More
If you have ever tried to access a website, but received a "403 Forbidden" error message, you know how frustrating it can be. This error message means that you are not allowed to access requested resource. In this article, we will explain what Apache 403 Forbidden errors are, what causes them, and how to fix them. What is an Apache 403 Forbidden Error? An Apache 403 Forbidden error occurs when server receives a request for a resource, but server refuses to fulfill request. This error message is usually displayed in web browser and indicates that user is not authorized to ... Read More
Ansible is an automation tool that helps in configuring and managing servers, networking devices, and other infrastructure. It simplifies process of automation by providing a high-level language to describe infrastructure as code. In this article, we will discuss how to check if a file exists using Ansible. Why Check if a File Exists in Ansible? Checking if a file exists is an important task when automating infrastructure. It allows you to determine whether or not a file is present on a system, which can be useful when creating idempotent tasks. Idempotence means that a task can be run multiple times ... Read More
If you are a system administrator or a DevOps engineer, you know how important automation is in your daily operations. One of most popular tools for automation is Ansible, a configuration management tool that simplifies management of servers, network devices, and other IT infrastructure. In this article, we will dive into Ansible playbooks, a powerful feature of Ansible that allows you to automate complex tasks and configurations. What is an Ansible Playbook? An Ansible playbook is a YAML file that describes a set of tasks to be executed on one or more hosts. Playbooks are heart of Ansible automation, providing ... Read More
Ansible is an open-source IT automation tool used for configuration management, application deployment, and task automation. It allows system administrators to manage a large number of servers with ease. Ansible Playbook is a powerful feature of Ansible that allows users to automate tasks and manage configurations. When creating a Playbook, it's important to test and validate it before executing it on production systems. Ansible offers a Dry Run feature to run a playbook in check mode, which enables users to simulate execution of playbook without making any actual changes. This article will explain what a Dry Run is and how ... Read More
Android Studio is an Integrated Development Environment (IDE) developed by Google for building applications for all Android devices. It is a powerful tool that provides a comprehensive environment for creating and testing Android apps, with features such as code highlighting, debugging, and testing. In this article, we will explore various features of Android Studio that make it an indispensable tool for building Android apps. We will also discuss how Android Studio can be used to create apps for different Android devices, such as smartphones, tablets, wearables, and even TV. Getting Started with Android Studio Before we dive into features of ... Read More