Recently, I assembled a NAS system using an old laptop and needed to configure it so that the laptop does not enter sleep mode when the lid is closed. Here are the steps I followed: Edit the logind.conf file with the following command: vi /etc/systemd/logind.conf You will see the following content: #HandlePowerKey: Action when the … Read more
In Linux systems, understanding the system’s login history is crucial for system management and security auditing. The last command helps us easily view the system’s login history records. Today, let’s learn about this super useful command—last.1. What is the last Command?The last command is used to display the system’s login history. It lists the login … Read more
Practical Commands for Linux System Administration In today’s digital age, Linux, as a powerful open-source operating system, has become the preferred platform for server environments and technical professionals due to its high flexibility, security, and stability. This article provides readers with some practical commands for Linux system administration, covering network configuration, system monitoring, file operations, … Read more
As we all know, I usually use the ArchLinux operating system, which is a rolling release version, meaning that various software packages are updated quickly. However, I suddenly discovered that the USB tethering feature on Android phones has a bug. After some troubleshooting, I found that it was a bug caused by the Linux kernel. … Read more
A critical vulnerability exists in the USB audio driver of the Linux kernel that may lead to out-of-bounds memory reads. This vulnerability has been patched by Takashi Iwai from SUSE. If an attacker gains physical access to the system, they can exploit malicious USB devices to escalate privileges, tamper with system memory, or execute arbitrary … Read more
Author —— User: -llwcc To be honest, I do not like the ambiguous name “Lincoln Z”. For car enthusiasts like us, who are more emotional and literary, heritage and depth are seemingly ethereal yet extremely important. Clearly, the name “Zephyr” carries more meaning, which is why I prefer not to use the official generic name. … Read more
☝ Click on the above “Smartlabs”, and follow us 1. The Shift from Fragmentation to Unification in Smart Home Protocols 1.1 Three Technological Revolutions Reshaping the Industry Landscape The birth of the Zigbee protocol in 2003 was like injecting the first stream of vitality into smart homes. Its low-power characteristics based on the IEEE 802.15.4 … Read more
Author: Zhao Xiaofei IoT Think Tank Original Please indicate the source and origin when reprinting Introduction Due to policy and historical reasons, the development of LoRa in China has primarily relied on market mechanisms, with most companies’ layouts, collaborations, and implementations being market-driven actions. Over the past year, these market behaviors have exhibited some distinct … Read more
Traditional building fire alarm monitoring systems often use wired connections, making installation time-consuming and labor-intensive, especially in older residential areas. With the development of Internet of Things (IoT) technology, a fire alarm monitoring system based on LoRa technology has been designed, leveraging the advantages of LoRa technology such as long communication distance, low power consumption, … Read more
A Danish king who loved blueberries and had blue teeth The name “Bluetooth” comes from King Harald Bluetooth of Denmark, who lived in the 10th century (he loved to eat blueberries, which made his teeth appear blue). During the preparatory phase of the industry association, a highly expressive name was needed to label this high-tech … Read more