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If you are a Linux user, there is no doubt that you have heard of Ubuntu OS. Ubuntu is an open-source operating system based on the Debian architecture and is one of the most popular distributions of Linux. Its user-friendly interface and versatile nature makes it a great operating system for both personal and professional use. As with any operating system, password security in Ubuntu is of utmost importance. With cyberattacks increasing day by day, secure passwords are essential to keep your information safe from unauthorized access. This guide aims to simplify the process of changing your user ... Read More
In this tutorial, we will explore Collectl, a powerful performance analysis tool for Linux systems. Collectl provides comprehensive monitoring capabilities, allowing us to gather and analyze system performance metrics in real-time. Throughout this article, we will learn how to install Collectl and utilize its features to monitor various system resources, including CPU, memory, disk, and network usage. Installing Collectl To begin, let's install Collectl on our Linux system by following these steps − Step 1 − Open a terminal window on your linux machine. Step 2 − Update the package repository by running the following command ... Read More
Exodus is a powerful tool that allows you to export and import software packages, including binaries and their dependencies, from one Linux system to another. This eliminates the need for complex manual installation procedures and ensures that all required dependencies are properly transferred. Transferring Linux binaries from one system to another can be challenging, especially when dealing with multiple machines or complex dependency chains. Exodus simplifies this process by creating portable bundles that include both the binary and its runtime environment. Installing Exodus Exodus is typically not included in most Linux distributions by default, so you need ... Read More
Cr3dOv3r is a powerful credential reuse attack tool specifically designed for Kali Linux, a popular distribution used for penetration testing and ethical hacking. This tool helps security professionals identify whether user credentials (email/username combinations) have been compromised in data breaches or reused across multiple platforms. Credential reuse attacks exploit the common practice where users employ the same password across different services, creating significant security vulnerabilities. Installation and Setup To install Cr3dOv3r on your Kali Linux machine, follow these steps − Step 1 − Open a terminal using the keyboard shortcut Ctrl+Alt+T or by clicking the terminal icon ... Read More
The Dialog tool is a command-line utility in Linux that allows developers to create interactive dialog boxes within shell scripts. These dialog boxes provide a user-friendly interface for displaying information, receiving input, and making selections, significantly enhancing the usability of command-line applications. Dialog boxes serve as an excellent bridge between the command line and graphical user interfaces, offering a text-based visual interaction that is both accessible and functional. This makes them particularly valuable for system administration scripts and user-interactive applications. Installing Dialog Tool Before creating dialog boxes, ensure that the Dialog tool is installed on your Linux ... Read More
GitHub Flavored Markdown (GFM) is an enhanced version of standard Markdown developed by GitHub, featuring additional syntax elements that make it perfect for technical documentation, README files, and collaborative development. Unlike basic Markdown, GFM includes support for tables, task lists, strikethrough text, automatic URL linking, and syntax highlighting for code blocks. This guide demonstrates how to work with GFM on Linux systems, covering both basic syntax and advanced features with practical examples. Basic GitHub Flavored Markdown Syntax Headers and Text Formatting Headers use hash symbols (#) with levels from 1 to 6 − # ... Read More
CRLFuzz is a powerful Linux tool written in Go that scans for CRLF (Carriage Return Line Feed) vulnerabilities in web applications. CRLF vulnerabilities occur when applications mishandle line termination characters, potentially leading to HTTP response splitting, cross-site scripting (XSS), and session hijacking attacks. This tutorial covers the installation process, demonstrates CRLFuzz usage with various command-line options, and explains how to effectively identify CRLF vulnerabilities to strengthen web application security. What are CRLF Vulnerabilities CRLF vulnerabilities arise when user input containing carriage return (\r) and line feed () characters is not properly sanitized. Attackers can exploit this to ... Read More
There are two methods for creating systems of computers with multiple processors or processor cores: multiprocessor organization and multicore organization. Both strategies aim to boost a computer's processing power by enabling it to handle several tasks simultaneously. Several separate processors linked by a communication network make up a multiprocessor system. Each processor can carry out a unique set of instructions and has separate local memory. The throughput of the entire system can be increased by these processors working on several tasks concurrently. In contrast, multicore systems achieve similar goals using multiple cores within a single processor chip. What ... Read More
The curl command is a versatile tool in the Linux environment, enabling data transfers to and from servers using various protocols including HTTP, HTTPS, FTP, and SMTP. This command-line utility is renowned for its robustness and flexibility, making it essential for sending HTTP requests, retrieving files, uploading data, and testing APIs. Checking Curl Version Before using curl, verify its installation and version information using the --version flag. This displays version details, supported protocols, and features. $ curl --version curl 7.72.0 (x86_64-pc-linux-gnu) libcurl/7.72.0 OpenSSL/1.1.1g zlib/1.2.11 Release-Date: 2021-02-24 Protocols: dict file ftp ftps gopher http ... Read More
In this article, I'll show you how to view configuration files without comments in Linux using a few simple commands. Removing comments from configuration files can help you more easily find the information you need and make modifications to system settings. We'll explore two methods to accomplish this task − using the grep and sed commands. With these methods, you can effortlessly streamline your Linux system's configuration files, making it easier to locate critical information and adjust settings as needed. If you need to remove comments from a configuration file in Linux, the grep command is a straightforward and ... Read More