Building an Embedded Linux Environment on Raspberry Pi 4B: A Complete Guide from Scratch

Building an Embedded Linux Environment on Raspberry Pi 4B: A Complete Guide from Scratch

“Building an Embedded Linux Environment on Raspberry Pi 4B: A Complete Guide from Scratch” Introduction The Raspberry Pi 4B, as a widely popular embedded development platform, is an ideal choice for embedded Linux development due to its powerful performance and rich peripheral interfaces. This article is aimed at embedded development engineers and provides a detailed … Read more

Kali Linux Repository Key Loss: All Users Unable to Perform APT Updates, Manual Reinstallation Required

Kali Linux Repository Key Loss: All Users Unable to Perform APT Updates, Manual Reinstallation Required

Source: IT Home On April 28, the official Kali Linux blog announced that in the coming days, apt update will be nearly ineffective for everyone. The Kali Linux team accidentally lost access to the repository signing key, necessitating the creation of a new key. Meanwhile, the repository has been frozen, so no one has been … Read more

Detailed Usage of the Linux apropos Command

Detailed Usage of the Linux apropos Command

Introduction <span><span>apropos</span></span> is a fuzzy search tool that can search for input keywords in all <span><span>man</span></span> pages. Compared to <span><span>whatis</span></span>, which can only search command names, <span><span>apropos</span></span> can also search descriptions. Common Options <span><span>-e, –exact</span></span>: Returns names and descriptions that exactly match the keyword <span><span>-d</span></span>: Print debug messages <span><span>-w, –wildcard</span></span>: Use wildcard to search for … Read more

Monitoring and Tuning the Linux Network Stack: Submitting Packets to the Protocol Stack

Monitoring and Tuning the Linux Network Stack: Submitting Packets to the Protocol Stack

Monitoring and Tuning the Linux Network Stack: Receiving Data (1) – Network Device InitializationMonitoring and Tuning the Linux Network Stack: Receiving Data (2) – Interrupts and NAPIMonitoring and Tuning the Linux Network Stack: Receiving Data (3) – Monitoring Network DevicesMonitoring and Tuning the Linux Network Stack: Receiving Data (4) – Soft InterruptsMonitoring and Tuning the … Read more

Kali Linux Update Failure Warning After Losing Repo Signing Key

Kali Linux Update Failure Warning After Losing Repo Signing Key

Offensive Security warns Kali Linux users to manually install the new Kali repository signing key to avoid update failures. Previously, OffSec lost the old repo signing key (ED444FF07D8D0BF6) and was forced to create a new key (ED65462EC8D5E4C5) signed by Kali Linux developers using the signing from the Ubuntu OpenPGP key server. Since the key was … Read more

Does Linux Really Need Something as Massive as Systemd?

Does Linux Really Need Something as Massive as Systemd?

There is a question that is very similar, which is – “Why do schools require uniforms?”My son’s high school is an arts school, where most students study performing arts, broadcasting, fine arts, and other artistic majors. One advantage of such a school is that the average attractiveness of students is higher compared to regular high … Read more

Essential Linux Command Line Help Tools: Comprehensive Analysis and Practical Techniques

Essential Linux Command Line Help Tools: Comprehensive Analysis and Practical Techniques

Comprehensive Analysis of Linux Command Line Help Tools Proficient use of help tools in Linux systems is key to enhancing operational efficiency. This article systematically reviews mainstream methods for viewing command help and provides usage suggestions based on practical scenarios. 1. Built-in Help Tools –help or -h option is suitable for quickly obtaining a brief … Read more

Analysis of Senior Linux Development Position at Hikvision

Analysis of Senior Linux Development Position at Hikvision

Table of Contents 1. Job Introduction 2. Analysis 2.1. Mastering Debugging Tools 2.2. Knowledge of Block Devices 3. Resume Suggestions Consolidate, share, and grow, so that both you and others can gain something! 😄 📢 In this article, we will analyze the <span>Linux</span> development engineer position at Hikvision. Last day of the knowledge base activity … Read more

Linus Torvalds Criticizes Case-Insensitive File Systems as a Major Mistake

Linus Torvalds Criticizes Case-Insensitive File Systems as a Major Mistake

Linus Torvalds, the “Father of Linux”, has once again expressed his frustration by publishing a lengthy post on the Linux Kernel Mailing List (LKML), harshly criticizing the case-insensitive feature in file systems. Link to the full post: https://lore.kernel.org/lkml/CAHk-=wjajMJyoTv2KZdpVRoPn0LFZ94Loci37WLVXmMxDbLOjg@mail.gmail.com/ He explicitly stated that this design is a “huge mistake”, and that file system developers have never … Read more