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Articles on Trending Technologies
Technical articles with clear explanations and examples
10 Apk Commands for Alpine Linux Package Management
Alpine Linux is a lightweight and secure Linux distribution designed to be resource-efficient and fast. It is a popular choice for running Docker containers and is widely used in embedded systems and network appliances. One of the key features of Alpine Linux is its package management system, which is based on the APK tool. Introduction to APK APK (Alpine Package Keeper) is the package manager for Alpine Linux, used to manage the installation, removal, and updating of software packages. It is a simple and fast tool designed to work efficiently on resource-constrained systems. The APK package manager uses ...
Read MoreMemory ballooning in OS
Memory ballooning is a dynamic memory management technique used in virtualized environments to optimize memory allocation among virtual machines (VMs). It allows the hypervisor to reclaim unused memory from one VM and redistribute it to others that need more resources, preventing memory waste and improving overall system efficiency. How Memory Ballooning Works Memory ballooning operates through a special balloon driver installed in each guest VM that communicates with the hypervisor. The driver can artificially consume memory within the VM when the hypervisor needs to reclaim it, and release that memory back to the VM when resources become available ...
Read MoreFind the Total Size of All Files in a Directory on Linux
Finding the total size of all files in a directory is a common task for Linux system administrators and users who need to monitor disk usage and manage storage effectively. Linux provides several command-line tools and GUI applications to calculate directory sizes in various formats. Understanding directory sizes helps users identify storage bottlenecks, clean up unnecessary files, and optimize system performance. This guide covers multiple methods to find the total size of directories on Linux systems. Finding the Total Size Using Command-Line Tools The du Command The du (disk usage) command is the most commonly used ...
Read MoreHow to Get Total Inodes of Root Partition?
Before we dive into the topic of how to get total inodes of root partition, let's start with understanding what inodes actually are. Inodes, short for Index Nodes, is a data structure used by the file system to store information about files and directories. Every file or directory on a Unix-based system has an inode associated with it, which contains metadata such as permissions, timestamps, and other attributes. In simple terms, an inode acts as a pointer to where data is stored on the hard drive. It is worth noting that unlike file names or directory names which can ...
Read MoreDarkstat – A Web Based Linux Network Traffic Analyzer
In today's fast-paced digital world, having a clear understanding of your network traffic is essential. Whether you are a network administrator or a casual user, monitoring your network traffic can help you identify and troubleshoot potential issues, as well as optimize your network for better performance. One tool that can help you achieve this is Darkstat – a web-based Linux network traffic analyzer. What is Darkstat? Darkstat is a lightweight network traffic analyzer that captures and analyzes network traffic in real-time. It is designed to provide detailed insights into your network usage, including information about the source and ...
Read MoreHow to Configure Postfix and Dovecot with Virtual Domain Users in Linux?
Configuring Postfix and Dovecot with virtual domain users is an essential process for anyone running a Linux-based email server. These two software applications work together to handle incoming and outgoing emails. Postfix is the mail transfer agent (MTA) responsible for routing and delivering email messages, while Dovecot is the mail delivery agent (MDA) that delivers incoming emails to users' mailboxes and allows clients to retrieve them. This guide provides a step-by-step approach to configure both services for virtual domain users, allowing you to host multiple email domains on a single server without creating system users for each email account. ...
Read MoreHow to know what the 'errno' means in Linux?
Errno is a global variable in Linux and Unix systems that indicates the type of error that occurred during system calls and library function execution. When a system call or library function encounters an error, it sets the errno variable to a specific integer value that corresponds to the type of error. This mechanism allows developers to identify and handle different types of errors programmatically. The errno variable is defined in the header file and is thread-local in modern implementations. Each error code has both a numeric value and a symbolic constant name written in uppercase letters. ...
Read MoreAMP - A Vi/Vim Inspired Text Editor for Linux Terminal
AMP (Another Microscopic Editor) is a Vi/Vim inspired text editor designed specifically for the Linux terminal. This open-source, lightweight editor combines the familiar command structure of Vim with modern enhancements, making it an excellent choice for developers and system administrators who prefer command-line tools for their speed and efficiency. AMP lives up to its name by being microscopic in size yet powerful in functionality. It provides a terminal-based editing environment that feels familiar to Vim users while offering some unique features that enhance productivity. Installing AMP AMP can be installed on most Linux distributions using the package ...
Read More10 Basic Interview Questions with Answers on Linux Networking
Linux is a widely used operating system, and networking is a crucial aspect of it. The ability to understand and troubleshoot Linux networking is a valuable skill for any IT professional. In this article, we will cover some basic interview questions on Linux networking, along with their answers and examples. What is the purpose of the ifconfig command, and how is it used? The ifconfig command is used to configure and manage network interfaces on Linux. It can be used to view the current network configuration, assign IP addresses, configure network interfaces, and set other network-related parameters. Here ...
Read MoreMemory Management: Background
Memory management is a fundamental aspect of operating systems that controls how memory resources are allocated, tracked, and released. It ensures that programs have access to the memory they need while maintaining system stability and performance. The operating system acts as a mediator between applications and the physical memory, managing both primary memory (RAM) and secondary storage to optimize overall system efficiency. How Memory Management Works The operating system divides memory into different regions and assigns these areas to applications and processes as needed. It maintains data structures to track which memory locations are free, which are allocated, ...
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