The root filesystem is the first one that must be mounted during Linux startup; if the system cannot mount the root filesystem from the specified device, it will fail to start.Other filesystems can then be mounted automatically or manually. Therefore, different filesystems can coexist within a system.Different types of filesystems have different characteristics, thus they … Read more
Word Count:4500 Content Index:⭐⭐⭐⭐⭐ Concept of Linux Device Driver System calls are the interface between the operating system kernel and application programs, while device drivers serve as the interface between the operating system kernel and machine hardware. Device drivers abstract hardware details from application programs, allowing them to interact with hardware devices as if they … Read more
The serial port is a commonly used interface in computers, with the most common being the RS-232-C interface. It was established in 1970 by the Electronic Industries Alliance (EIA) in collaboration with Bell Systems, modem manufacturers, and computer terminal manufacturers as a standard for serial communication. Its full name is “serial binary data exchange interface … Read more
While I was waiting for the bus, I waited for one that never came, but those I didn’t wait for always arrived. This has a specific term in psychology: poverty. You can call me ugly, stupid, or lazy, but it doesn’t matter, only calling me poor will truly upset me. This society is too realistic; … Read more
With the rapid development of smart devices, ST’s MCU business has expanded rapidly. In recent years, popular applications such as shared bicycles, drones, and more IoT devices have mostly adopted the STM32 series MCUs.As the general market leader for Cortex-M32, since ST launched the first STM32F103 in 2007, STM32 has developed into a super platform … Read more
“ When it comes to the most geeky business cards, this PCB card that can run Linux will definitely catch your eye. ” This Linux-running business card is crafted by embedded systems engineer George Hilliard. The entire card is the size of a credit card, ultra-thin, practical, and costs less than $3. To create such … Read more
Author | Green Alliance Technology Ge Wu Laboratory Chen Jie Introduction: In firmware analysis, it is often necessary to locate the firmware’s loading address, especially the memory address where Vxworks or Linux kernel is loaded into memory, which facilitates reverse engineering tools like IDA PRO for correct disassembly and string references. In the following sections, … Read more
Since I changed my job position, I haven’t researched reverse security for about 4 or 5 years. I thought I would have no connection with this profession again, but unexpectedly, today I had a chance to “enjoy” it again due to a random opportunity. Recently, my colleagues in the company have been constantly reporting that … Read more
In the previous section (HG533 Router Analysis Tutorial: Finding Hardware Debug Interface), we analyzed the hardware structure of the PCB and discovered a UART interface. Through this interface, we achieved a Linux shell management interface. In this section, we will use the methods proposed in the last section to access the device and further debug … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join the technical exchange QQ group with 1000 members, remark 【Official Account】 for faster approval 1. Basic Structure and Common Instructions of Dockerfile FROM – Specify Base Image FROM ubuntu:20.04 This instruction sets Ubuntu 20.04 as the base image. RUN – Execute Command … Read more