In Linux systems, port management is a crucial aspect of network service configuration and troubleshooting. When multiple services attempt to bind to the same port, or when it is necessary to confirm whether a service is running properly, quickly locating the Process ID (PID) that occupies a specific port is a key operation. This article … Read more
In the practical introduction to Linux, the twelfth essential knowledge point is system performance monitoring and tuning, which is a core capability to ensure system stability and efficient operation. Here are the key points: 1. Core Monitoring Tools Real-time Resource Monitoring (<span>top</span>/<span>htop</span>) <span>top</span>: Dynamically displays processes sorted by CPU and memory usage (default refresh every … Read more
This article mainly introduces the setup of MongoDB replica set mode in a Linux environment (one primary, one secondary, and one arbiter), including setup steps, primary-secondary switching, high availability testing, etc. Architecture Diagram One Primary, One Secondary, One Arbiter Environment Ubuntu 5.4.0-6ubuntu1~16.04.12 mongodb-linux-x86_64-ubuntu1604-4.2.8.tgz Steps Create Primary Node Create directories for data and logs # Primary … Read more
Under normal circumstances, I would enter the R interactive environment from the Linux terminal to installR packages: R # Enter R environment BiocManager::install(“ggplot2“) # Run the installation command in R q() # Exit after installation is complete Today, I will share with you the method of directly installing R packages from the Linuxterminal: Method 1: … Read more
Click the blue text above to follow JieChuangYuan Linux There are not many graphical tools for image format conversion and adding text watermarks on Linux systems. Using the command line or shell scripts of ImageMagick is still inconvenient. To solve this problem, the author has developed a small tool software. Software Features: This tool can … Read more
In Linux operations, time synchronization is a crucial yet often overlooked aspect. Accurate time is essential for logging, task scheduling, security auditing, and the proper functioning of distributed systems. This article will detail the concepts, tools, configurations, troubleshooting, and optimization strategies for time synchronization in Linux systems, helping you achieve efficient time management. 1. Overview … Read more
Follow our official account to keep receiving embedded knowledge! In embedded Linux projects, should we develop in C or C++? I think it depends on the preferences and expertise of the lead developer. Here is a popular topic in the embedded field on Zhihu; let’s see what the experts say: Original link: https://www.zhihu.com/question/374663834 Several highly … Read more
Why is Linux the Preferred Choice for Building a Socks5 Server? In today’s increasingly complex network proxy demands, the Linux Socks5 server, with its stability, customizability, and open-source ecosystem advantages, has become the core choice for enterprise-level proxy deployment and personal network optimization. Compared to Windows, Linux’s low resource consumption (only requires 512MB of memory … Read more
Installing the QT Development Environment on Linux 0. Downloading the Installation Package You can download all versions of QT from the following website: https://download.qt.io/ This demonstration installs version 5.9.0, which is a long-term support version, so navigate to archive/qt/5.9/5.9.0 Here, we are on Linux, so select the Linux version of the installation package, click the … Read more
1. Protocol Interpretation The HCI_LE_Set_Scan_Parameters command is used to set the scanning parameters. 1.1 Command Parameters LE_Scan_Type indicates whether the scan is active or passive. The LE_Scan_Interval and LE_Scan_Window parameters are recommendations from the Host on how long (LE_Scan_Window) and how frequently (LE_Scan_Interval) the Controller should scan. The LE_Scan_Window parameter shall always be set to … Read more