Problem Analysis Due to selecting standard partitioning instead of LVM (Logical Volume Management) when installing the system in VMware, the vgextend command cannot be used to dynamically extend the root partition (/). The created partition disk is sdax. At this point, entering the system and typing vgdisplay will yield no response, as there is currently … Read more
In the vast expanse of technology, there shines a brilliant star that illuminates every corner of the computer world with its open and free spirit: Linux. Today, let us delve into the story of Linux’s birth and growth, exploring the legend behind it. Origins: New Demands in the Context of the Times Looking back to … Read more
This article introduces practical methods for querying user information in Linux systems, focusing on command-line tools for obtaining user account details, login information, and user activity status. To create a new user, you can use the <span>useradd</span> command; to modify existing user attributes, you need to call the <span>usermod</span> command via the command line. The … Read more
RedHat Linux 8.1 Installation Guide This installation example is performed on a virtual machine. Virtual Machine System Information Virtual Machine Software: VMware® Workstation 16 Pro Version: 16.0.0 build-16894299 1.System Image Version rhel-8.1-x86_64-dvd.iso 1.Preparation of Local Network Environment 1.Start Installation – Create a New Virtual Machine 1.Select Custom Installation 1.Select Install Operating System Later 1.Select Linux … Read more
Hello everyone, welcome to <span>LiXin Embedded</span>. Today, we are going to discuss something hardcore—Linux kernel core dumps, commonly known as coredumps. This tool is a lifesaver when debugging program crashes, especially in embedded development where device resources are limited and issues are deeply hidden. Coredumps can help you quickly locate the root cause of problems. … Read more
Collected and organized all Linux kernel vulnerabilities from January 1, 2022, to February 18, 2023, with data sourced from NVD, totaling 314 vulnerabilities. The analysis of the Linux kernel attack surface is based on CWE types and the subsystems where the vulnerabilities are located. CWE Statistics According to publicly available CVE information, a total of … Read more
Tip: For a better reading experience, it is recommended to read on a PC! 1 What are Concurrency and Race Conditions In Linux systems, concurrency refers to the situation where multiple execution units (processes, threads, interrupts, etc.) access shared resources simultaneously or alternately, while a race condition refers to the uncertain behavior or errors caused … Read more
Linux iconv Command <span>iconv</span> is a powerful command-line tool in Linux systems for character encoding conversion. It can convert text files or input streams from one character encoding to another, widely used for handling multilingual text, data migration, and cross-platform data exchange. 1. Introduction to iconv <span>iconv</span> is a command-line tool based on the GNU … Read more
Many people are confused about Wi-Fi and WLAN, often thinking that these two terms express the same meaning. In fact, they are like the relationship between “fruit” and “apple”; one is a general category, while the other is a specific type. Next, let’s enhance our understanding through a principle-level analysis! One is like a “stage … Read more
Have you ever faced the awkward situation of not having external speakers for your computer? Or wanted to play music from your computer on your phone but struggled with unstable Bluetooth connections?WiFiAudio provides a clever solution—turning your phone into a wireless speaker for your computer over a local area network, without the need for Bluetooth, … Read more