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There are many scenarios where we think that we have opened a file to make changes using the root user, but when we actually try saving the changes, we realize that the file was opened with a normal user or with a user that doesn't have the specific permission to edit the file. In such cases, we usually have only one option and that is to close the file with the command shown below − :q! And then, open the file again with the command shown below − sudo su vi file.txt ... Read More
Distributed Operating System is a type of operating system model where applications run on multiple interconnected computers that appear as a single unified system to users. It extends beyond network operating systems by providing higher levels of communication, integration, and resource sharing across distributed machines. A distributed OS runs on multiple CPUs across different physical locations, but presents itself to end-users as an ordinary centralized system. It enables seamless sharing of resources like CPU, disk storage, network interfaces, and processing nodes across multiple sites, effectively increasing the total computational capacity and data availability of the entire system. Architecture ... Read More
The NTFS Partition Failed to Mount error is a common issue that occurs when Linux systems cannot access NTFS-formatted Windows partitions. This error prevents users from reading or writing files on Windows drives, which can be particularly frustrating in dual-boot environments where accessing Windows files from Linux is essential. NTFS (New Technology File System) is Microsoft's proprietary file system used by Windows since Windows NT 3.1. While Linux natively uses ext4, it can access NTFS partitions through the ntfs-3g driver, which provides read/write support for NTFS volumes. Common Causes The NTFS mount failure can occur due to ... Read More
Clementine is a free and open-source music player designed for Linux systems, known for its intuitive interface and powerful features. The Clementine 1.4 release brings significant enhancements including streaming service integration, improved visualizations, and better library management capabilities. What is Clementine? Clementine is a cross-platform music player that offers a user-friendly interface with extensive customization options. It supports multiple audio formats, playlist management, music streaming from popular services, and various visualization effects. The player is particularly favored by Linux users for its stability and feature completeness. New Features in Clementine 1.4 Streaming Service Support ... Read More
Finding all distinct file extensions in a folder hierarchy is a common task in Linux system administration and file management. This operation requires combining several powerful Linux utilities to recursively traverse directories and extract unique file extensions. Required Linux Commands The two essential Linux utility commands for this task are − find − Locates files and directories recursively based on specified criteria sed − Stream editor used for text manipulation, searching, and pattern replacement Finding Extensions in a Single Directory For a single directory, you can iterate through files without using the find ... Read More
A Network Operating System (NOS) is specialized system software designed to manage and coordinate network resources, facilitate communication between connected devices, and provide services to multiple users across a network. Unlike traditional operating systems that manage single computers, a NOS focuses on network-wide operations and resource sharing. What is a Network Operating System? The Network Operating System specializes in managing network devices such as routers, switches, firewalls, and servers. It supports workstations, Personal Computers (PCs), and terminals connected over a Local Area Network (LAN) or Wide Area Network (WAN). The primary purpose is to enable seamless communication, resource ... Read More
Let us understand the concepts of Mega and Ubuntu One before learning the differences between them. Mega Mega is a cloud storage and file hosting service developed by MEGA Ltd in 2013. It was written using C++, JavaScript, Java and C, with services offered through web-based applications. Mega was once the largest free cloud storage provider worldwide, offering 15 GB of storage for free accounts (currently reduced from the original 50 GB). It supports Microsoft Windows, macOS, Linux, Android, iOS, Windows Phone, and browser extensions, providing cloud storage, file hosting, and remote backup services. Features of ... Read More
In the world of network management, Simple Network Management Protocol (SNMP) is one of the most widely used protocols. It allows network administrators to monitor and manage network devices remotely. However, while working with SNMP, you might encounter an error message called "sendto operation not permitted netsnmp". This error is quite common and can be caused by several factors. In this article, we will explore the causes of this error, its impact, and how to fix it. What is "sendto operation not permitted netsnmp" Error? When you are working with SNMP, you may receive an error message that ... Read More
A system call is a mechanism in Linux that allows user-space applications to interact with the kernel, which forms the core of the operating system. When a user-space application needs privileged operations performed—such as reading/writing files or creating new processes—it must request these services from the kernel through system calls. How Linux System Calls Work System calls are executed in kernel mode and accessed by user-space applications through standard C library functions like open(), read(), write(), close(), fork(), and exec(). System Call Execution Flow ... Read More
Akaunting is a free, open-source accounting software that can be used to manage your finances, create invoices, track expenses, and generate financial reports. It is a great alternative to expensive commercial accounting software and is suitable for small to medium-sized businesses. In this article, we will guide you through the steps to install Akaunting on Ubuntu 20.04. Prerequisites Before starting the installation, ensure you have: Ubuntu 20.04 server with root or sudo access At least 1GB RAM and 10GB free disk space A domain name (optional but recommended for production) Step 1: Update Your ... Read More