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Articles on Trending Technologies
Technical articles with clear explanations and examples
10 Interview Questions and Answers on Linux Commands
Linux is an open-source operating system that has gained popularity over the years. Linux commands are essential for system administration, development, and daily operations. If you are preparing for a technical interview, understanding core Linux commands is crucial. This article provides 10 common Linux command interview questions with detailed answers to help you succeed. What is the command to create a new file in Linux? The command to create a new file in Linux is touch. This versatile command allows users to create empty files instantly. touch filename.txt The touch command can also update ...
Read MoreCreating Software RAID0 (Stripe) on ‘Two Devices’ Using ‘mdadm’ Tool in Linux
RAID 0 (Stripe) stands for Redundant Array of Inexpensive Disks. It is a data storage technique that combines multiple disks into a single logical unit to provide improved performance and storage capacity. RAID 0 uses striping to write data across multiple disks simultaneously, offering faster data access but no redundancy. In this article, we will learn how to create RAID 0 on two devices using the mdadm tool in Linux. What is RAID 0? RAID 0, also known as striping, divides data into blocks and writes them across all disks in the array. This allows for faster ...
Read MoreWhat is the computer architecture that supports the operating system?
Computer architecture refers to the design and organization of computer systems that provide the foundation for operating system functionality. Different operating systems are designed to work with specific architectural configurations, each offering distinct advantages for various computing needs. Single Processor System A single processor system uses one CPU to manage all computer operations and run the operating system. This architecture executes tasks sequentially, with the processor handling one instruction at a time while coordinating various system functions. Single Processor System Architecture CPU ...
Read MoreRemove the First Line of a Text File in Linux
There are several ways to remove the first line of a text file in Linux. In this article, we will explore four different methods that can be used to accomplish this task, each with its own advantages and syntax. Method 1: Using the head Command The head command displays the first few lines of a text file. To remove the first line, we use the -n option with a negative value. The -n -1 option tells head to display all lines except the last one, which effectively removes the first line when we want all but the first. ...
Read MoreARM calling conventions on WinCE and Linux
The ARM processor architecture has become increasingly popular in embedded systems and mobile devices due to its low power consumption, high performance, and cost-effectiveness. It is widely used in operating systems such as Windows CE and Linux. This article discusses ARM calling conventions on these two platforms. What is a Calling Convention? A calling convention is a set of rules that dictate how function calls are made in a program. These rules define how arguments are passed, how return values are handled, and how the stack is managed during function calls. Several different calling conventions exist for ARM ...
Read MoreHow to find number of RAM Slots in Linux
Random Access Memory (RAM) is an essential component of any computer system that stores data the processor uses frequently to speed up program execution. Since the number of RAM slots determines the maximum amount of memory that can be installed, knowing how many slots are available is crucial for planning memory upgrades. This article demonstrates three methods to find the number of RAM slots in Linux systems. Why Know the Number of RAM Slots? Understanding your system's RAM slot configuration is essential for several reasons. The amount of installed RAM determines how many programs can run simultaneously and ...
Read MoreDiskpart Command in Windows
Diskpart is a powerful command-line disk management utility in Windows that allows users to manage hard drives, partitions, and volumes directly from the command prompt. Available since Windows XP and present in all modern Windows versions, Diskpart provides advanced disk operations that go beyond the capabilities of the graphical Disk Management tool. What is Diskpart Diskpart is a text-based disk partitioning utility that operates through a command-line interface. Unlike graphical tools, Diskpart provides scriptable automation and access to advanced features such as partition table conversion, dynamic disk management, and low-level disk operations. It's particularly valuable for system administrators, ...
Read MoreCreating Virtual Hosts, Generate SSL Certificates _ Keys and Enable CGI Gateway in Gentoo Linux
Setting up a web server to host multiple websites is a common task for system administrators and developers. In this guide, we will cover how to create virtual hosts, generate SSL certificates and keys, and enable CGI gateway in Gentoo Linux. Virtual hosts allow you to host multiple websites on a single server, each with their own unique domain name and content. This is useful when you want to host multiple websites with different purposes or for different clients on a single server. Enabling SSL on your website is important for security and to establish trust with your ...
Read MoreThe netcat Command in Linux
The netcat command in Linux is a powerful network utility for communication and troubleshooting. It allows users to read and write data to network connections using TCP or UDP protocols. Often called the nc command, netcat serves as a versatile tool for establishing connections, transferring files, port scanning, and network debugging. What is the netcat command? The netcat command, also known as nc, is a command-line utility that enables reading and writing data over network connections. It can establish connections to servers and clients, send and receive data, and perform various network-related tasks. Network administrators commonly use it ...
Read MoreWhere is entry of hypercalls in KVM
Kernel-based Virtual Machine (KVM) is a virtualization infrastructure for Linux that allows multiple operating systems to run simultaneously on a single host machine. It leverages hardware virtualization support, such as Intel VT-x and AMD-V, to provide efficient virtualization. A critical aspect of KVM's operation is how virtual machines communicate with the hypervisor through hypercalls. What Are Hypercalls A hypercall is a privileged instruction that allows a virtual machine to interact with the hypervisor — the software layer controlling access to physical hardware. Similar to system calls in non-virtualized environments, hypercalls enable virtual machines to request services such as ...
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