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Articles on Trending Technologies
Technical articles with clear explanations and examples
Memory Protection in Operating Systems
Memory protection is a fundamental security mechanism in operating systems that prevents one process from accessing or modifying the memory space allocated to another process. This isolation ensures system stability and security by maintaining strict boundaries between different programs running concurrently. The primary goal of memory protection is to prevent unauthorized memory access. When a process attempts to access memory outside its allocated space, the operating system immediately terminates the offending process, preventing potential system crashes or security breaches. How Memory Protection Works Memory protection is typically implemented using hardware components called Memory Management Units (MMUs). The ...
Read MoreHow to Monitor Performance Of CentOS 8_7 Server Using Netdata?
Monitoring the performance of your CentOS server is essential for maintaining its stability, optimizing resource usage, and identifying potential issues before they impact your system. In this article, we will explore how to monitor the performance of CentOS 8/7 servers using Netdata, a powerful and user-friendly monitoring tool. With Netdata, you can gain real-time insights into various system metrics, visualize performance data, and effectively troubleshoot performance bottlenecks. Installing Netdata on CentOS 8/7 To monitor the performance of your CentOS 8/7 server using Netdata, you need to install it first. Follow these steps to get Netdata up and running: ...
Read MoreHtop - An Interactive Process Viewer for Linux
Htop is an interactive process viewer and system monitor for Linux that provides a superior alternative to the traditional top command. It offers real-time, color-coded visualization of system resources and running processes with an intuitive interface that allows users to manage processes interactively. Unlike the static output of top, Htop displays CPU, memory, and swap usage in colorful progress bars at the top of the screen, followed by a scrollable list of processes. This enhanced interface makes system monitoring more efficient and user-friendly for both beginners and experienced administrators. Installation Install Htop using your distribution's package manager: ...
Read MoreProcess States and Transitions in a UNIX Process
Process states and transitions are fundamental concepts in operating systems that define how processes move through different phases during their lifecycle. In UNIX systems, understanding these states is crucial for effective process management and system optimization. This article explores the various process states in UNIX and their transitions, providing insights into how the system manages concurrent execution. Process States in UNIX UNIX processes exist in one of five primary states during their execution. Each state represents a specific condition and determines what actions the process can perform. UNIX Process States ...
Read MoreNewsroom – Linux Client to Get Your Favorite News
In today's world, staying informed about the latest news is essential for our daily lives. However, the sheer volume of news available can be overwhelming, making it difficult to keep up. Fortunately, there are several news readers available that can help us navigate the vast amount of information out there. In this article, we'll explore everything about Newsroom, a lightweight and open-source newsreader specifically designed for Linux users. We'll delve into the installation process and the necessary requirements for setting up Newsroom, and provide examples to guide you through the entire setup. Whether you want to stay informed or ...
Read MoreHow to Block USB Storage Devices in Linux Servers?
USB storage devices have become ubiquitous in our technology-driven world, but they also pose a significant security threat to organizations. Attackers can exploit these devices to introduce malware, steal sensitive data, or gain unauthorized access to a network. To protect Linux servers against such attacks, administrators can take proactive measures by blocking USB storage devices. This article will delve into the various ways to accomplish this, including the benefits of each approach and the necessary steps to implement them. Method 1: Using udev Rules The udev system in Linux manages devices and their files. By using udev ...
Read MoreopenSquat – Domain Squatting and Phishing Watchdog
openSquat is a powerful cybersecurity tool designed to detect domain squatting and phishing attempts. Built in Python, it monitors suspicious domain registrations that could target your brand or organization. Domain squatting involves registering domains similar to legitimate ones to deceive users or profit from brand confusion. openSquat leverages Python modules such as whois, requests, tldextract, and BeautifulSoup to analyze domain information, detect malicious patterns, and provide real-time monitoring capabilities for cybersecurity professionals. Features Domain Monitoring − Continuously tracks specific domains for suspicious changes Squatting Detection − Identifies domains that mimic legitimate brands or trademarks Phishing Analysis ...
Read MoreLock Variable Synchronization Mechanism
Lock variable synchronization is a fundamental mechanism in concurrent programming that ensures multiple threads or processes can safely access shared resources without encountering race conditions or data corruption. It provides a way to control execution order, allowing threads to have exclusive access to critical sections when needed. In this article, we will explore lock variable synchronization, its use cases, and demonstrate its implementation with a practical C example. How Lock Variable Synchronization Works The core concept involves using a shared variable (called a lock or mutex - mutual exclusion) to control access to critical code sections. A ...
Read MoreHow to Monitor Progress of (Copy_Backup_Compress) Data using pv Command?
Monitoring the progress of data operations, such as copying, backing up, or compressing files, is essential for keeping track of their status and ensuring their successful completion. One powerful tool that can help in this regard is the pv command. Short for "pipe viewer, " the pv command provides real-time monitoring of data as it flows through a pipeline. With its simplicity and effectiveness, the pv command can be a valuable addition to your toolkit for managing data tasks. In this guide, we will explore how to use the pv command to monitor the progress of copy, backup, and ...
Read MorePacVim – A CLI Game to Learn Vim Commands
PacVim is an innovative CLI game that transforms learning Vim commands into an engaging Pac-Man-style experience. Instead of memorizing commands through traditional methods, players navigate through mazes while collecting pellets that represent different Vim operations, making the learning process both fun and effective. Vim has been a favorite of many programmers and Linux users for years due to its powerful features and flexibility. However, Vim's learning curve has often been a barrier for newcomers. PacVim addresses this challenge by gamifying the learning process, allowing users of all skill levels to master Vim commands through interactive gameplay. How PacVim ...
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