For those new to Python web development, does the thought of database operations make you feel overwhelmed? You just want to store some data or query some information, but you first have to learn complex SQL syntax and deal with various configurations? Today, I recommend a super user-friendly Python library—Orator. Using it to operate databases … Read more
Smart Future 1. The Three Stages of IoT Evolution: From Laboratory to Ubiquitous Connectivity 1. Emergence Phase (1991-2004): Dormancy Before Concept Realization In 1991, Professor Kevin Ashton from MIT first proposed the concept of the Internet of Things (IoT), which at that time was merely a theoretical concept in the laboratory. In 1995, Bill Gates … Read more
Everyone knows that information security is crucial for every enterprise today. Safeguarding server information security is one of the essential skills for every operations engineer. Today, I will share practical insights about the kernel-level auditing tool of the Linux system—auditd, which helps you protect server information security. By using it effectively, even if hackers invade, … Read more
【Introduction】The following information is sourced from online searches and does not represent my personal experience with all of these systems. The comments are summarized from various online forums and are for reference only. Senior experts should be mindful of their wording when sharing insights. Recently, many comments on the article about Linus developing Linux have … Read more
When Robot Vacuums Become “Peepers”: How to Protect Privacy in Smart Homes? In August 2024, news broke that “a well-known brand of robot vacuum has a security vulnerability that allows it to be remotely controlled for spying,” causing anxiety in countless households. The “cleaning assistant” that was supposed to free our hands can silently record … Read more
1 ARI (Alternative Routing-ID Interpretation) 1.1Technical Background To understand ARI, it is essential to grasp the traditional routing ID limitations of PCIe. A PCIe request (such as Memory Read/Write) consists of three parts in the Requester ID: Bus Number (8 bits), Device Number (5 bits), Function Number (3 bits) In traditional mode, a PCIe device … Read more
Hello everyone, today we are going to talk about a topic that countless backend developers both love and hate—MD5 encryption. Have you encountered these scenarios: The interviewer asks: “Is MD5 an encryption algorithm?” You immediately reply “yes,” and then get criticized thoroughly. You store user passwords using MD5, only to have them cracked in seconds … Read more
Abstract The Linux kernel 6.17 has been released, with Linus Torvalds officially announcing that this update includes extensive hardware support, improvements in file systems and networking, as well as enhancements in security and observability. Key additions include support for ARM’s BRBE (Branch Record Buffer Extension), AMD HFI (hardware feedback interface), compatibility with Intel Wildcat Lake … Read more
🔐 Say Goodbye to Complicated Passwords! A Complete Guide to Passwordless Login on Linux to Double Your Operations Efficiency Do you have to enter a password every time you SSH login? As a qualified operations engineer, how can you tolerate such repetitive work! Today, I will teach you a trick to completely break free from … Read more
1. What is sudo <span>sudo</span> (superuser do) is a tool used in Linux/Unix systems to execute commands as a superuser (root) or another specified user. Ordinary users can gain temporary administrative privileges through <span>sudo</span>, avoiding the need to use the root account directly. Using <span>sudo</span> enhances system security and reduces the risk of accidental operations. … Read more