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KnightLi Blog

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Technical Docs

Technical documentation, command references, and step-by-step implementation notes for tools, systems, and development workflows.

Computer Terms in Plain Language: What TTS, STT, API, RAG, and Agent Really Mean

Dirty Frag CVE-2026-43284: Linux Local Privilege Escalation Risk and Mitigation Guide

Btrfs Scrub Guide: Data Verification, Auto-Repair, and Regular Maintenance

Does F2FS Freeze an HC620 SMR Drive? Linux SMR Disk Troubleshooting Guide

DeepSeek V4 Local Private Deployment: Choosing Domestic Chips or Consumer GPU Clusters

Local LLM Models Recommended for an RTX 3060 GPU

How to Draw Dashed Lines, Arrows, Curves, and Change Canvas Size in AI

Choosing a Linux Desktop Distribution in 2026: Ubuntu, Deepin/UOS, Linux Mint, and Fedora Compared

How to Control fdupes Deletion Order: Keep Duplicate Files by Directory Priority

May 2026 Edge High-Risk Vulnerability CVE-2026-2441: Malicious Pages May Trigger Remote Code Execution

What Is the Difference Between Snap, Flatpak, and apt?

Linux 7.0 and 7.1 NTFS Driver Changes Explained

sudo vs sudo-rs: What the Rust Version of sudo Changes

X11 vs Wayland: Differences, Pros, Cons, and When to Choose Each

Copy Fail CVE-2026-31431: Container Escape Risk in the Linux Kernel File-Copy Path

Linux Kernel 7.0 Feature Update Overview

hackingtool: Uses, Risks, and Learning Boundaries of an All-in-One Security Toolkit

What auto-editor does: cut silence automatically and export to Premiere or Resolve

rsync --delete Explained and Practical Directory Cleanup

How Git Tracks File Executable Permission (+x)

Hugo Shortcode Practice: bundle-file (Keep Multilingual Files and Attachments in One Page Bundle)

How to Create and Use Skills: SKILL.md Specification and Practical Principles

IEEE 802.3af/at/bt (PoE) Differences Explained

What Is Agent Skills: From Design Principles to Context Optimization

Common Misconceptions About WD HC620 SMR Drives and How to Use Them Correctly

How Non-Programmers Can Direct AI to Do the Work: Extracting Diagrams and Math Formulas from an Image (Hands-On Example)

How to Use Codex in VS Code (From Setup to Efficient Real-World Workflow)

LLM API Landscape (Free and Cost-Effective Options)

OpenWrt on JDCloud AX6600 Athena: Move the 2.5G Port to LAN and Swap WAN/LAN1

C Struct Initialization and Character/String Fields

GNU C `attribute` Guide

Fix pyOCD Failing to Detect Some DAPLink Probes on Ubuntu

Compress Microsoft Office Word Documents (.docx)

JTAG vs SWD: Pros and Cons

CMake Basics and Practical Templates

STM32/PY32 GPIO: 8 Input/Output Modes Explained

Install and Use pyOCD + J-Link on Ubuntu 24.04

Python Compression: Create Encrypted Archives in ZIP and 7z

FFmpeg H.265 Transcoding: Different Encoders, Software vs Hardware Speed Comparison

Ubuntu + LSI: Check Drive Health with smartctl, Locate Drives with storcli64, and Perform Safe Hot Swap

Fixing OpenWrt WireGuard Auto-Reconnect Issues

Fixing vgextend Error: Devices have inconsistent logical block sizes

Using LVM to Manage Disks on Ubuntu

Encode MP3 with ffmpeg

How to Safely Hot-Swap HDDs (Do It Right and Avoid Hardware Damage)

inpaint-web: Free, Open-Source Image Inpainting, Watermark Removal, and Super-Resolution Tool

Common Wi-Fi Channel Frequency Ranges: 2.4G and 5G (5.2G / 5.5G / 5.8G)

Xiaomi AX3600: MIBIB and Firmware Compatibility

OpenStick Debian System Tuning: Wi-Fi AP and Compression Optimization

Rebuild Debian Firmware for OpenStick Wi-Fi Stick