Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with a note of 【Public Account】 for faster approval 1. Concept of Libraries A library (Library) is a collection of pre-compiled code (functions, classes, data, etc.) that can be shared and reused by multiple programs. The core … Read more
Do you want to delve into the Linux kernel and write your own drivers? This tutorial will take you from scratch to mastering the core skills of Linux driver development, and through rich practical cases, you will quickly acquire the ability to write various types of drivers! 1. Preparation: Environment Setup and Tool Installation This … Read more
With the rapid development of domestic information technology systems, an increasing number of devices are adopting non-x86 architecture CPUs, such as ARM, Loongson, Shenwei, and RISC-V. Among them, the ARM architecture holds a significant market share due to its wide application, with Feiteng and Huawei Kirin being the main representatives of ARM architecture. When developing … Read more
Have you ever pressed the power button and found yourself staring at a waterfall of code on the screen, feeling helpless? It’s like a car dashboard going haywire when the engine won’t start; the command line prompts during a Linux boot failure can often leave newcomers feeling overwhelmed. Today, we will dissect the ignition process … Read more
Last week, I mainly wrote an article on common file compression and decompression commands. If needed, you can look up the historical articles. This article mainly summarizes a comparison of the following 10 commonly used compression/decompression commands, covering core features, applicable scenarios, and performance differences to help you quickly choose the best tool! 1. Core … Read more
🔥 When you see the output of <span><span>ip a</span></span>, are you confused by the mysterious parameters like <span><span>LOOPBACK</span></span>, <span><span>fq_codel</span></span>, and <span><span>metric 100</span></span>? 🔥 This article uses real terminal output examples to analyze the meaning of each parameter line by line and reveals how to diagnose network issues using them!🚀 At the end of the article, … Read more
Detailed Explanation of Ubuntu Netplan 1. Overview Netplan is a new network configuration tool introduced in Ubuntu starting from version 17.10, designed to simplify and unify the network configuration process. It defines network interface settings through YAML configuration files and supports <span>NetworkManager</span> and <span>systemd-networkd</span> as backends. Advantages Readable and writable YAML format. Unified configuration method. … Read more
Follow “Java Matters” and select “Star” to receive a free Java book package, whether you are a newcomer or an experienced developer in this new era.Source: Online. When your server’s CPU reaches 100%, how do you troubleshoot the abnormal fault? At the end of this article, a shell script will be shared to help you … Read more
[Image] In the vast realm of the Linux kernel, performance optimization and fault diagnosis stand as two towering peaks, obstructing the path of developers. To scale these two heights, developers are constantly in search of powerful tools. Among them, perf is undoubtedly one of the most dazzling “artifacts.” When running a complex Linux system, have … Read more
RedHat <strong><span>nmcli</span></strong> Tool Overview 1. Overview <span>nmcli</span> is a command-line interface tool provided by NetworkManager for managing network connections in Linux systems. It supports configuration, management, monitoring, and debugging of network devices and connections. For Red Hat-based distributions (such as RHEL, CentOS, etc.), <span>nmcli</span> is the standard network management tool. 2. Installation and Version Check … Read more