Comprehensive! Selected Analysis of 100 Linux Interview Questions: Advanced Edition | Mastering Kernel Tuning and 24 Core System Performance Issues

If mastering basic commands is the entry point and being proficient with operational tools is intermediate, then true advanced Linux capability comes from your ability to gain insights into the system’s underlying architecture and precisely control performance bottlenecks.。 In high-concurrency business environments, where server resources are tight and system anomalies occur frequently, the ability to … Read more

Sharing My PPT on the Linux Bus, Device, and Driver Model from a Few Years Ago

Sharing my PPT on the “Linux Bus, Device, and Driver Model” from a few years ago, which explains why Linux is designed this way, the reasons behind it, and its main design principles.1. An imagined Ethernet controller/a board 2. Decoupling 3. Unified binding 4. Bus, device, driver 5. Matching 6. Devices are devices, drivers are … Read more

Quick Identification: How to Find the PID of Processes Using a Specific Port in Linux

In Linux systems, port management is a crucial aspect of network service configuration and troubleshooting. When multiple services attempt to bind to the same port, or when it is necessary to confirm whether a service is running properly, quickly locating the Process ID (PID) that occupies a specific port is a key operation. This article … Read more

Prometei Botnet Attacks Linux Servers for Cryptocurrency Mining

Shake Network Technology NewsClick the right to follow for the latest technology news! Cybersecurity researchers have observed a significant increase in the activity of the complex malware Prometei botnet, which targets Linux servers for cryptocurrency mining and credential theft. This latest wave of attacks, observed since March 2025, showcases the evolving trends of cryptocurrency mining … Read more

Discussing Linux: System Performance Monitoring and Tuning

In the practical introduction to Linux, the twelfth essential knowledge point is system performance monitoring and tuning, which is a core capability to ensure system stability and efficient operation. Here are the key points: 1. Core Monitoring Tools Real-time Resource Monitoring (<span>top</span>/<span>htop</span>) <span>top</span>: Dynamically displays processes sorted by CPU and memory usage (default refresh every … Read more

Setting Up MongoDB 4 in a Linux Environment (PSA Architecture)

This article mainly introduces the setup of MongoDB replica set mode in a Linux environment (one primary, one secondary, and one arbiter), including setup steps, primary-secondary switching, high availability testing, etc. Architecture Diagram One Primary, One Secondary, One Arbiter Environment Ubuntu 5.4.0-6ubuntu1~16.04.12 mongodb-linux-x86_64-ubuntu1604-4.2.8.tgz Steps Create Primary Node Create directories for data and logs # Primary … Read more

Methods for Installing R Packages from the Linux Terminal

Under normal circumstances, I would enter the R interactive environment from the Linux terminal to installR packages: R # Enter R environment BiocManager::install(“ggplot2“) # Run the installation command in R q() # Exit after installation is complete Today, I will share with you the method of directly installing R packages from the Linuxterminal: Method 1: … Read more

Linux’s Gaming Experience Seems to Improve, Yet It Becomes a ‘Compatibility Layer’ for Windows

In the past few years, Linux has made incredible progress in the gaming field. Once a platform despised by gamers for its complexity and limited compatibility, it has now become a potential force to break Microsoft’s monopoly in the PC gaming sector. With the continuous investment from Proton, Bazzite, and the Linux user community, there … Read more

Image Format Conversion and Text Watermarking Tool for Linux Systems

Click the blue text above to follow JieChuangYuan Linux There are not many graphical tools for image format conversion and adding text watermarks on Linux systems. Using the command line or shell scripts of ImageMagick is still inconvenient. To solve this problem, the author has developed a small tool software. Software Features: This tool can … Read more

A Practical Guide to Time Synchronization in Linux Systems

In Linux operations, time synchronization is a crucial yet often overlooked aspect. Accurate time is essential for logging, task scheduling, security auditing, and the proper functioning of distributed systems. This article will detail the concepts, tools, configurations, troubleshooting, and optimization strategies for time synchronization in Linux systems, helping you achieve efficient time management. 1. Overview … Read more