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Open Source Articles
Page 5 of 123
How to Write Scripts Using Awk Programming Language?
Awk is a powerful text-processing language named after its three original authors: Alfred Aho, Peter Weinberger, and Brian Kernighan. It's a versatile language primarily used for pattern scanning and processing, and is a staple of Unix scripting commonly used for tasks like data extraction, reporting, and data transformation. Awk scripts are quick to write and perform well for small to medium-sized tasks. This article introduces you to the basics of writing scripts using the Awk programming language. Basic Syntax An Awk program consists of a sequence of pattern-action pairs, written as − pattern { action ...
Read MoreHow to Zip a File in Linux?
File compression is a fundamental task in Linux system administration for managing storage space and efficiently transferring files. Linux provides several powerful command-line tools including gzip, zip, tar, and others for compressing files and directories. This guide covers the most commonly used compression methods and their practical applications. Using the gzip Command gzip (GNU zip) is a widely-used command for single file compression in Linux. It provides excellent compression ratios and is included by default in most distributions. gzip filename.txt This command compresses filename.txt and renames it to filename.txt.gz. The original file is replaced ...
Read MoreInitial Server Setup and Configurations on RHEL 7
Red Hat Enterprise Linux (RHEL) 7 is a Linux-based operating system from Red Hat designed for businesses. This article provides a practical guide on performing initial server setup and configurations on RHEL 7. We will walk through essential first steps to prepare a RHEL 7 server for production use. Logging in as Root After your server boots, you will log in as the root user. The root user is the administrative user in a Linux environment with full system privileges. ssh root@your_server_ip Creating a New User After logging in as root, it's recommended ...
Read MoreInitial Server Setup with Ubuntu 20.04 18.04 and 16.04
Initial Server Setup is a critical first step after deploying a fresh Ubuntu server instance. Proper configuration ensures security, stability, and optimal performance for hosting applications or services. This guide covers essential setup procedures for Ubuntu versions 20.04, 18.04, and 16.04, including user management, security hardening, and basic service configuration. Prerequisites Before beginning the server setup process, ensure you have the following requirements − Fresh Ubuntu 20.04, 18.04, or 16.04 server instance Root access or user account with administrative privileges SSH client for remote server connection (e.g., OpenSSH, PuTTY) Server's public IP address System ...
Read MoreInstall RedMail with Virtual Domains, Webmail, SpamAssassin & ClamAV in Linux
Email communication remains an integral part of our personal and professional lives. Setting up a reliable and secure mail server is crucial for efficient communication within organizations or for personal use. Mail-in-a-Box (commonly called RedMail) is a fully-featured mail server solution that offers a comprehensive suite of tools to create virtual domains, access webmail, and enhance email security with SpamAssassin and ClamAV. In this article, we will guide you through the process of installing Mail-in-a-Box on a Linux system. Prerequisites Before diving into the installation process, ensure you have the following − A clean Ubuntu 18.04 ...
Read MoreInstall Adobe Flash Player 11.2 On CentOS/RHEL 7/6 and Fedora 25-20
Adobe Flash Player 11.2 was a widely used multimedia platform that enabled users to view interactive content, play online games, and stream videos. While Adobe officially discontinued Flash Player support in 2020, some legacy systems and applications still require Flash Player 11.2 to function properly. This guide covers installing Adobe Flash Player 11.2 on CentOS/RHEL 7/6 and Fedora 25-20 systems. Prerequisites Before proceeding with the installation, ensure you have the following − A CentOS/RHEL 7/6 or Fedora 25-20 system with administrative privileges A web browser such as Mozilla Firefox or Google Chrome installed Internet connection for ...
Read MoreInstall Ghost (CMS) Blog Publishing Platform on Debian and Ubuntu
Ghost is an open-source content management system built on Node.js, known for its simplicity, speed, and elegant design. This modern publishing platform offers a clean interface for bloggers and content creators who prioritize writing and performance. In this tutorial, we will walk through the complete installation process of Ghost on both Debian and Ubuntu systems. Prerequisites Before beginning the installation, ensure you have the following requirements − A server or virtual machine running Debian or Ubuntu Root or sudo access to the system At least 1GB RAM and 10GB disk space A registered domain name (optional ...
Read MoreInstall ImageMagick (Image Manipulation) Tool on RHEL, CentOS and Fedora
ImageMagick is a powerful open-source software suite used for image manipulation, editing, and conversion. It supports a wide range of image formats and provides a comprehensive set of command-line tools for performing various image-related tasks. In this article, we will guide you through the process of installing ImageMagick on RHEL (Red Hat Enterprise Linux), CentOS, and Fedora systems. Installation Process Step 1: Update the System Before installing any software, it is recommended to update your system to ensure you have the latest package information. Open a terminal and run the following command − sudo dnf ...
Read MoreInstall Latest SMPlayer in Debian, Ubuntu, Linux Mint and Fedora
SMPlayer is a popular cross-platform multimedia player that supports various formats and codecs. It provides a user-friendly interface and offers advanced features like playback speed control, subtitle support, and YouTube integration. This article will guide you through the process of installing the latest version of SMPlayer on Debian, Ubuntu, Linux Mint, and Fedora distributions. Installing SMPlayer on Debian-based Systems Method 1: Using Official Repository (Recommended) For most users, installing from the official repositories is the simplest approach − sudo apt update sudo apt install smplayer Method 2: Using PPA (Latest Version) To ...
Read MoreInstall LXC (Linux Containers) in RHEL, Rocky & AlmaLinux
LXC (Linux Containers) is an operating system-level virtualization method that allows you to run multiple isolated Linux systems (containers) on a single host. It provides a lightweight and efficient alternative to traditional virtualization technologies like VMware or VirtualBox. In this guide, we will walk through installing LXC on RHEL, Rocky Linux, and AlmaLinux. Prerequisites Before proceeding with the installation, ensure that you have the following prerequisites − A supported version of RHEL, Rocky Linux, or AlmaLinux Sudo or root access to the system An internet connection At least 2GB RAM and 10GB free disk space ...
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