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Articles on Trending Technologies
Technical articles with clear explanations and examples
Priority Assignment to Tasks in Operating System
The practice of giving each task or process in an operating system a priority level is known as priority assignment. A priority level is a numerical value that represents the relative urgency or significance of a task compared to other tasks in the system. When multiple tasks are ready to run, the operating system uses the priority level to determine which task should execute next. Higher-priority tasks are executed before lower-priority ones, ensuring efficient system operation and that critical tasks complete first. Types of Priority Assignment Priority assignment can be static or dynamic: Static Priority Assignment ...
Read MoreHow to Change or Set Hostname on CentOS 8/RHEL 8?
In computer networking, a hostname is a human-readable label used to identify devices connected to a network. Instead of remembering complex IP addresses, hostnames provide an intuitive way to access and communicate with network devices, making network administration and resource sharing much more manageable. Hostnames are essential for network communication because devices use them to identify themselves during communication. This simplifies network operations and makes it easier for users to connect to services and resources across the network. Checking the Current Hostname Before modifying the hostname, you should first check the current configuration. On CentOS 8/RHEL 8, ...
Read MoreHow to Optimize Docker Performance?
Docker has revolutionized the way software is developed, deployed, and scaled. With its lightweight containers and efficient resource utilization, Docker enables faster application delivery and greater scalability. However, as your Docker-based applications grow in complexity, ensuring optimal performance becomes crucial to maintain efficiency and meet user demands. In this article, we'll explore the best practices and techniques for optimizing Docker performance. We'll delve into various factors that influence Docker's performance, such as container configuration, resource allocation, networking, storage, and monitoring. By implementing these optimization strategies, you can enhance the speed, efficiency, and scalability of your Dockerized applications. Understanding ...
Read MoreHow to Change Port for Jenkins?
Jenkins is an open-source automation server that helps developers build, test, and deploy their software. When installed, Jenkins uses port 8080 by default to listen for HTTP requests. However, this port may conflict with other applications or not meet your environment's security requirements, making it necessary to change the port number. Understanding Ports in Jenkins A port is a virtual communication endpoint that allows applications to exchange data over a network. Ports are numbered from 0 to 65535, with specific numbers reserved for particular services (e.g., port 80 for HTTP, port 443 for HTTPS). Common Jenkins Ports ...
Read MoreHow to Change Runlevels (targets) in SystemD?
SystemD is a system and service manager for Linux operating systems that manages the boot process, system services, and provides a centralized way to manage processes. One of its key features is the use of targets (the modern equivalent of runlevels) to define different system states and control which services run during startup and operation. Understanding how to change targets is essential for Linux administrators as it allows precise control over system behavior, resource usage, and available services based on specific operational requirements. Understanding SystemD Targets SystemD replaces traditional Unix runlevels with targets, which are more flexible ...
Read MorePriority Inheritance Protocol (PIP) in Synchronization
Priority Inheritance Protocol (PIP) is a synchronization mechanism used in real-time operating systems to solve the priority inversion problem. Priority inversion occurs when a high-priority task is blocked by a lower-priority task that holds a shared resource, causing system delays and potentially missed deadlines. The Priority Inversion Problem Consider three tasks with different priorities: High (H), Medium (M), and Low (L). If task L acquires a resource that task H needs, while task M is running, task H must wait for both M and L to complete. This violates the priority-based scheduling principle. ...
Read MoreHow To Change Speed & Duplex of Ethernet Card in Linux with Ethtool Command?
Ethernet cards, also known as network interface cards (NICs), are hardware components that allow computers to connect to networks. These cards enable data transmission between devices by converting digital signals from a computer into electrical signals that can be sent over the network's physical medium, such as copper wires or fiber-optic cables. Ethernet cards are essential for accessing the internet, file sharing and printing in a local network. Understanding Ethtool Command Ethtool is a Linux command-line utility that allows users to query and change various network interface card (NIC) settings. It provides detailed information about the NICs installed ...
Read MoreHow to Change SSH Port in Linux?
Secure Shell (SSH) is a network protocol that provides encrypted communication over an insecure network. By default, SSH listens on port 22, which is well-known and frequently targeted by attackers. Changing the SSH port to a non-standard number adds an extra layer of security through security through obscurity. Checking Current SSH Port Before changing the SSH port, verify which port your SSH service is currently using. Use the following command to check the current configuration: sshd -T | grep port This command will display output similar to: port 22 addressfamily any listenaddress ...
Read MoreAnalyze Disk Usage in Linux Using Dutree
When managing Linux systems, one of the most crucial considerations is disk space management. As we accumulate files and directories, it's easy to lose track of what's consuming space and how to optimize disk usage. Dutree is a powerful command-line tool that helps analyze disk usage with an intuitive tree-like visualization. This article explores dutree in detail, covering what it is, how to use it, and the benefits it offers for analyzing disk usage in Linux systems. Whether you're a beginner or advanced user, dutree can help optimize your disk space usage and keep your system running smoothly. ...
Read MoreHow to Change User Password in Ubuntu?
If you are a Linux user, there is no doubt that you have heard of Ubuntu OS. Ubuntu is an open-source operating system based on the Debian architecture and is one of the most popular distributions of Linux. Its user-friendly interface and versatile nature makes it a great operating system for both personal and professional use. As with any operating system, password security in Ubuntu is of utmost importance. With cyberattacks increasing day by day, secure passwords are essential to keep your information safe from unauthorized access. This guide aims to simplify the process of changing your user ...
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