Embedded Software & Tools

  • Operating Systems (Linux, RTOS, Android)
  • Firmware Development
  • Embedded Security
  • Development Tools & IDEs
  • AI/ML in Embedded Systems

A Brief Introduction to the Underlying Mechanisms of Linux Program Execution

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A Brief Introduction to the Underlying Mechanisms of Linux Program Execution

🌟 1. Program Startup: From “Forking” to “Transforming” Forking After entering a command, the Shell instantlyforks a child process, where the parent and child share resources, but throughCopy-On-Write (COW) optimization—only when data is modified do they “split”, saving time and effort! Transforming (execve) The child process calls<span>execve</span> to replace its genes: the kernel parses the … Read more

Mastering Core Skills in Linux File Compression and Packaging

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Mastering Core Skills in Linux File Compression and Packaging

Linux Cloud Computing | Daily Practice | Practical Tools | Career Development In Linux systems, file compression and packaging are essential skills. Whether for saving disk space or facilitating file transfer, mastering these techniques can significantly enhance your efficiency. This article will take you through common compression and packaging formats such as tar, gzip, and … Read more

Linux Network Namespaces

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Linux Network Namespaces

Linux Network Namespaces 1. What are Linux Network Namespaces? A Network Namespace is a virtualization technology provided by Linux that allows the creation of multiple independent network environments, each with its own network interfaces, routing tables, iptables rules, etc. This is similar to network isolation in virtual machines or containers, but is more lightweight. Features … Read more

Installation of ipmitool on Linux Systems

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Installation of ipmitool on Linux Systems

Hello everyone, I am your tech life assistant 【Feng Shui Cat】! Today we will discuss the installation of the ipmitool tool in Linux systems.👇First, what is ipmitool? ipmitool is an open-source command-line tool based on the IPMI (Intelligent Platform Management Interface) standard, used for managing and monitoring the low-level status of hardware such as servers … Read more

The Three Musketeers of Linux: Mastering Regular Expressions, AWK, and Sed

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The Three Musketeers of Linux: Mastering Regular Expressions, AWK, and Sed

Regular Expressions Basic regular expression ( ^, s, ., [], *) metacharacters Linux regular expressions are tools used for processing large amounts of strings, defining a set of rules and methods to match specific text patterns. Regular expressions consist of ordinary characters (such as letters a to z) and special characters (also known as metacharacters) … Read more

Emergency Response: Linux Intrusion Investigation Strategies

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Emergency Response: Linux Intrusion Investigation Strategies

0x00 Introduction When a company experiences a hacker intrusion, system crash, or other security incidents that affect normal business operations, it is crucial to respond immediately to restore the company’s network information system to normal operation in the shortest time possible. Furthermore, it is necessary to investigate the source of the intrusion, reconstruct the incident … Read more

Synchronization Issues Between System Time and RTC in Embedded Linux

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Synchronization Issues Between System Time and RTC in Embedded Linux

Hello everyone, I am the Intelligence Guy~ Today, I will mainly share with you the synchronization issues between the Linux system time and the RTC. In a Linux system, the hardware real-time clock (RTC) acts like a “mechanical watch” that never loses power; it can persistently record time even when the device is turned off. … Read more

Why Does Linux Report ‘No Space Left on Device’ When There is Still Available Space?

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Why Does Linux Report 'No Space Left on Device' When There is Still Available Space?

Hello everyone, I am Yu Yong. Yesterday, I encountered a problem: a Linux server used for data transfer suddenly stopped being able to perform data transfers. Upon checking the logs, there were messages indicating that files could not be saved and ‘No space left on device’. Using the command df -Th to check disk space, … Read more

Matter Protocol vs Zigbee Protocol

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Matter Protocol vs Zigbee Protocol

In the rapidly evolving field of smart home technology, understanding the protocols that power your devices is crucial. The two major players in this field are the Matter protocol and the Zigbee protocol. Both protocols aim to make your smart home more interconnected and efficient, but they achieve this in different ways. In this comprehensive … Read more