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Articles on Trending Technologies
Technical articles with clear explanations and examples
What is the purpose of a register in a CPU and what are special purpose registers?
A CPU register is a small, high-speed storage location within the processor that temporarily holds data, instructions, or addresses during program execution. Registers are the fastest storage components in the computer hierarchy and are essential for CPU operations. CPU registers serve multiple purposes: they store operands for arithmetic operations, hold memory addresses for data access, maintain program execution state, and facilitate data transfer between different parts of the processor. Understanding registers is crucial for grasping how CPUs execute instructions efficiently. Types of CPU Registers CPU registers are classified into two main categories based on their functionality: ...
Read MoreTraditional Computing vs Mobile Computing
Mobile Computing deals with human-computer interaction using mobile devices. It encompasses mobile hardware, software, and computing devices that operate within a mobile infrastructure. Unlike traditional computing systems that rely on fixed network topologies and wired protocols, mobile computing uses ad-hoc networks and wireless communication protocols to enable computing on the move. Mobile Computing Architecture Cloud Storage Internet Network Mobile Network Infrastructure ...
Read MoreGuide to Useful File Manipulation Commands
File manipulation commands are essential tools for navigating, managing, and manipulating files in Unix/Linux systems. Whether you're a software developer, system administrator, or regular user, mastering these commands will significantly improve your productivity and efficiency when working with files through the terminal. This guide covers the most commonly used file manipulation commands that every user should know. These commands form the foundation of file management in command-line environments and are crucial for effective system administration and daily computing tasks. Using ls to List Directory Contents The ls command displays the contents of a directory. By default, it ...
Read More10 Best PuTTY Alternatives for SSH Remote Connection
If you're a system administrator, developer, or network engineer, chances are you've used PuTTY at some point. PuTTY is a popular SSH client for Windows that's been around for over two decades. However, there are several PuTTY alternatives that offer more features and better user experience. In this article, we'll explore the 10 best PuTTY alternatives for SSH remote connections. What is PuTTY? PuTTY is a free and open-source terminal emulator and SSH client for Windows. It supports various network protocols including SSH, Telnet, rlogin, and SCP, and can also act as a serial console client. PuTTY is ...
Read MoreCreate Centralized Secure Storage using iSCSI Target _ Initiator on RHEL_CentOS 7
iSCSI (Internet Small Computer System Interface) is a storage networking technology that allows block-level data to be transported over an IP network. It provides a cost-effective alternative to traditional Fibre Channel SANs by using standard Ethernet infrastructure to create centralized storage solutions. In this tutorial, we will set up an iSCSI target on a RHEL/CentOS 7 server and connect to it using an iSCSI initiator on another server. We will configure CHAP authentication to ensure secure communication between the target and initiator. Architecture Overview iSCSI Target & Initiator Architecture ...
Read MoreHow to grep and replace a word in a file on Linux?
While there are plenty of ways to print and make use of specific words from a particular file in a Linux directory, when we talk about grepping a particular word and then replacing it with some other word, we need to use specific Linux utility commands. The two Linux utility commands that we must be aware of are − find − used to locate a particular file or directory sed − short for stream editor and is used to perform functions like searching, editing and replacing Basic Grep and Replace Operation To solve the ...
Read MoreWhat is an instruction set in a computer?
An instruction set is a collection of commands that a computer processor can understand and execute. These instructions are written in machine language (binary code consisting of 1s and 0s) and control the movement of data and operations within the processor. The instruction set defines what operations the CPU can perform and how it communicates with memory and other system components. Examples of basic instruction types include − ADD − Add two numbers together JUMP − Jump to a designated memory address LOAD − Load information from RAM to the CPU STORE − Save data from CPU ...
Read MoreHow To Install and Configure The Composer on Ubuntu 16.04
In this article, we will learn how to install and configure Composer, a dependency management tool for PHP. Composer facilitates the installation and update of project dependencies while ensuring appropriate versions are maintained for project requirements. Prerequisites Ubuntu 16.04 machine Non-root user with sudo privileges Installing Dependencies Before installing Composer, update your system packages: sudo apt-get update Install the required packages to run Composer: sudo apt-get install curl php-cli git -y Reading package lists... Done Building dependency tree Reading state information... Done git is already ...
Read MoreRead Random Line From a File in Linux
In Linux, reading a random line from a file can be a useful task in various scenarios. For example, when you want to select a random word from a dictionary or randomly select a line from a log file for analysis purposes. There are several ways to read a random line from a file in Linux. In this article, we will explore different methods to achieve this task along with their pros and cons. Method 1 − Using shuf Command The shuf command is a simple and efficient way to read a random line from a file in ...
Read MoreHow do I Zip/Unzip on the Unix Command Line
Zipping and unzipping files is a fundamental practice in Unix/Linux systems for file compression and archiving. We compress files to save disk space and bundle multiple files into a single archive for easier transfer and storage. When working with compressed archives, understanding both compression and extraction commands is essential for effective file management in Unix environments. Installing zip and unzip Commands First, ensure that the zip and unzip utilities are installed on your system: sudo apt install zip unzip Basic zip and unzip Operations Let's start with creating some sample files to ...
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