Open Source Articles - Page 55 of 136

Introduction If you are using Linux as your operating system, then you might be familiar with apt command. Apt stands for "Advanced Package Tool" and it is a package manager used in Linux distributions like Ubuntu, Debian, and others. Apt is a command-line tool that allows users to search, install, remove, and manage software packages on their Linux system. In this article, we will discuss various apt commands with examples that will help you to understand how to use apt in Linux. Updating Package Lists Before installing any package on your Linux system, it's important to update package lists. Apt ... Read More

If you're someone who frequently uses Linux, you may have come across term 'apropos' while using terminal. Apropos is a very useful Linux command that helps users find commands related to a specific topic or keyword. In this article, we will take a closer look at 'apropos' command and explain its usage with several examples. What is Apropos? 'Apropos' is a command-line utility in Linux that searches manual pages for a keyword or topic and returns a list of relevant commands. It is a great tool for quickly finding commands you need, especially if you don't remember exact command name. ... 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

If you're looking for a lightweight and customizable Linux distribution, Bodhi Linux is definitely worth checking out. This operating system is based on Ubuntu and uses the Enlightenment desktop environment, which provides a sleek and minimalistic interface. In this guide, we'll go through the steps to install Bodhi Linux on your computer. We'll cover the requirements, the installation process, and some tips to get started with your new Bodhi Linux system. Requirements Before installing Bodhi Linux, you'll need to make sure your computer meets the following requirements − A 64-bit processor At least 512 MB of RAM (1 GB ... Read More

DHCP (Dynamic Host Configuration Protocol) is a networking protocol that allows automatic configuration of IP addresses and network settings for devices on a network. It eliminates the need for manual configuration of IP addresses and saves time and effort. In this article, we will guide you through the process of installing a DHCP server in CentOS, RHEL, and Fedora. Install DHCP Server Package To install the DHCP server package, open a terminal window and run the following command − sudo yum install dhcp This command will install the DHCP server package along with all the required dependencies. Configure DHCP ... Read More

If you're looking to enable OpenSSH on CentOS 7, you've come to the right place. In this article, we'll take a look at the steps you need to follow to install and enable OpenSSH on your CentOS 7 machine. We'll also take a look at some of the benefits of using OpenSSH and how to configure it to suit your needs. What is OpenSSH? OpenSSH is a secure shell protocol used to establish a secure connection between two computers over a network. It's an open-source version of the Secure Shell (SSH) protocol, which is widely used to provide secure remote ... Read More