Getting Started with Embedded Systems
Board Setup & Configuration
Programming Tutorials (C, Python, Rust)
Debugging & Performance Optimization
Time Limit: 2s Memory Limit: 192MB Problem Description Collatz Conjecture: A Japanese middle school student discovered a fascinating “theorem” and asked Professor Kakutani to prove it, but the professor was unable to do so, leading to the Collatz conjecture. The conjecture states that for any natural number, if it is even, divide it by 2; … Read more
In the last lesson, we explored in detail the int and its unsigned type unsigned int, mastering how integers are represented in computers. However, the numerical world in our lives is far more complex than just integers; our bank account balances and measurement results in scientific calculations often come with decimal points. So, how are … Read more
This article lists various practical Linux commands from aspects such as backup and compression, file system search, networking, arithmetic operations and conversions, text processing, date and time, multimedia, disk usage and management, and hardware information, serving as a reference guide. 1. Backup and Compression Command Description <span><span>tar -c scripts/ | bzip2 -9 > scripts.tar.bz2</span></span> Compress … Read more
Linux Command Line (Part 3) The ls command is very important. With it, you can view the contents of directories and determine the directory attributes of various important files, so there is ample reason to believe that the ls command is definitely one of the most used commands. Basic Usage <span>ls</span> (list) can list the … Read more
21. Question: What is the main purpose of the chmod command in Linux? Option 1: Change file permissions Option 2: Create a new directory Option 3: Display file contents Option 4: Delete files Correct Answer: 1 Explanation: The main purpose of the chmod command in Linux is to change file permissions. It allows you to … Read more
🌿 Linux Command Line (Part II): Introduction to File System Navigation What is the core component of an operating system? It is not the interface, nor the applications, but the file system. Without a file system, the system cannot boot. It is the carrier of all data and the foundation for user interaction with the … Read more
In the world of Linux and Unix, there are three essential text processing tools: <span>awk</span>, <span>sed</span>, and <span>vi</span>. Among them, vi is the most classic text editor, which has remained indispensable for decades. The vi editor is a tool that almost all system administrators and developers cannot avoid; it is lightweight, fast, and does not … Read more
Do Linux commands need to be memorized?Daily Linux Command: manDaily Linux Command: headThe tail(1) command is used to output the last part of a file.It corresponds exactly to the functionality of the head(1) command discussed in the previous chapter. For system administrators and developers, the tail(1) command is an important tool for real-time log monitoring. … Read more
Currently, there are many USB boot creation tools available on the market, such as the well-known tool “Rufus”. However, these tools often come with some proprietary features. How can we create a pure USB boot tool? Let’s experience how to create a Windows bootable USB drive in a Linux environment. Preparation for the Experiment USB … Read more
Have you ever forgotten the password you set after connecting to Wi-Fi for months? In fact, your device automatically stores all previously connected Wi-Fi passwords, which is why it can reconnect to the network automatically. This article will introduce how to explore the saved passwords of any network you have previously connected to on Windows, … Read more