A metal wound gasket is a high-performance sealing element made of high-quality stainless steel (commonly used materials include SUS304, SUS316) interleaved with flexible filler materials such as graphite, polytetrafluoroethylene, non-asbestos, or asbestos, wound in a spiral. It typically adopts a “V” or “W” shaped steel strip structure, with the starting and ending points fixed by … Read more
In an era where the wave of new energy vehicles sweeps across the globe, Chery, with its profound technical foundation and innovative spirit, continuously explores the boundaries of hybrid technology. The Starway Moon C-DM has emerged, gathering Chery’s cutting-edge technologies in power, intelligence, and safety, with product capabilities that exceed expectations, becoming a new focal … Read more
1. Core Features and Memory Layout Principles of Union A union is a special data structure in C language, characterized by all members sharing the same memory space, with the size determined by the largest member. This design allows unions to achieve type punning through memory reuse, playing an irreplaceable role in scenarios such as … Read more
Scope of Application:Chemistry, Metallurgy, Aggregation-Induced Emission Materials, Sensing FieldTechnical Introduction:A Zn2SnO4@C photocatalyst and its preparation method. Add Zn(NO3)2·6H2O to deionized water to obtain solution A; add SnCl4·5H2O to deionized water to obtain solution B; then slowly add solution B to solution A while stirring to obtain solution C. After that, add citric acid as an … Read more
Since its inception in 1991, Linux has withstood over 30 years of technological waves (from the PC era to mobile internet, cloud computing, and AI) while maintaining a robust vitality, even dominating fields such as servers, embedded systems, cloud computing, and supercomputing. The core reason for its “enduring success” lies in the high alignment of … Read more
Linux Redis Operations: Redis Sentinel Mode for High Availability Introduction In a production environment, the high availability of Redis is crucial for ensuring business continuity. Master-slave replication provides data redundancy and read-write separation, but it cannot automatically handle master node failures. The Redis Sentinel mode achieves a high availability architecture by monitoring master and slave … Read more
SecureLayer7’s security researchers have released technical details and proof of concept (POC) for the security vulnerability CVE-2025-6019, which affects Linux distributions relying on the udisksd daemon and libblockdev backend, including Fedora and SUSE. This vulnerability allows users in the allow_active group to gain root privileges through local privilege escalation (LPE), and it can be easily … Read more
1. Server Hardware Information Queries 1.1 CPU Information Queries Command Function Description Example <span>lscpu</span> Displays CPU architecture, number of cores, number of threads, etc. <span>lscpu</span> <span>cat /proc/cpuinfo</span> Detailed CPU information (model, cache, frequency) <span>cat /proc/cpuinfo</span> <span>lshw -C cpu</span> View detailed CPU information (vendor, number of cores, instruction set) <span>sudo lshw -C cpu</span> <span>nproc</span> View the … Read more
![Chapter 2: Basic Linux Commands, Practical Examples of the [touch] Command](https://boardor.com/wp-content/uploads/2025/10/a88f1ebc-0dba-4a61-8127-15fd0dd2336b.jpg)
In Linux, every file is associated with timestamps, which store information such as the last access time, last modification time, and last change time. Therefore, whenever we create a new file, access, or modify an existing file, the timestamps of that file are automatically updated. This article will introduce some practical examples of the Linux … Read more
0x00 Vulnerability ID CVE-2025-32462 CVE-2025-32463 0x01 Danger Level High Risk 0x02 Vulnerability Overview Sudo is a tool used in Unix-like systems that allows authorized users to execute commands with the security privileges of another user, widely used in system administration and operations. 0x03 Vulnerability DetailsCVE-2025-32462Vulnerability Type:Local Privilege EscalationImpact:Privilege EscalationSummary:The Linux sudo host privilege escalation vulnerability … Read more