Comprehensive Guide to Common Linux Commands

Comprehensive Guide to Common Linux Commands

1. File and Directory Operations Command Function Common Parameters Example <span>ls</span> List directory contents <span>-l</span>(detailed) <span>-a</span>(hidden files) <span>-h</span>(human-readable sizes) <span>ls -lah /home</span> <span>cd</span> Change directory <span>..</span>(parent directory) <span>~</span>(home directory) <span>cd ~/Documents</span> <span>pwd</span> Display current path – <span>pwd</span> <span>mkdir</span> Create directory <span>-p</span>(create parent directories) <span>mkdir -p project/{src,doc}</span> <span>cp</span> Copy files/directories <span>-r</span>(recursive) <span>-v</span>(verbose) <span>cp -rv data/ backup/</span> … Read more

Introduction to Linux (Part 1)

Introduction to Linux (Part 1)

1. What is Shell? First, let’s understand what a Shell is. The Shell takes the commands we input and passes them to the operating system for execution, so the Shell is a command-line user interface. You often see the term bash (Bourne Again Shell), which is a program composed of Shell. The name Bourne refers … Read more

A Guide to Mastering Linux Command Line: Efficient Commands to Easily Control Your System!

A Guide to Mastering Linux Command Line: Efficient Commands to Easily Control Your System!

Master these commands to significantly boost your Linux operating efficiency. As one of the most popular operating systems, Linux is renowned for its powerful command line tools. Whether you are a developer, system administrator, or tech enthusiast, mastering Linux commands can greatly enhance your productivity. Today, I will share some practical and efficient Linux commands … Read more

30 Linux Command Combinations: Solve 95% of Daily Operations Needs, Ready to Use!

30 Linux Command Combinations: Solve 95% of Daily Operations Needs, Ready to Use!

Core Idea: The Power of Command Combinations The philosophy of Linux is that a program should do one thing and do it well. Combining multiple commands through pipes <span>|</span>, redirection <span>></span>, and logical operators <span>&&</span> and <span>||</span> is key to solving complex problems. 1. System Status and Monitoring Real-time Monitoring of Core Metrics (Top Integrated … Read more

Day 57: Compatibility of Carriage Return and Line Feed in C Language

Day 57: Compatibility of Carriage Return and Line Feed in C Language

Day 57: Compatibility of Carriage Return and Line Feed in C Language The previous lecture detailed asynchronous traps in signal handling, emphasizing that signal handling functions should only perform minimal tasks (such as setting flags), and it is strictly prohibited to call non-asynchronous safe functions. It also pointed out the complexity of signal dispatch in … Read more

File Operations in Python

File Operations in Python

Introduction Regardless of the programming language, the purpose of data manipulation is to export processed data for subsequent use. The logic of file operations in Python differs somewhat from that in R, primarily divided into three parts: opening files, reading and writing files, and closing files. 1. File Encoding As mentioned in our Linux course, … Read more

Detailed Explanation of File Operations in C Language

Detailed Explanation of File Operations in C Language

In C language, file operations are very important functions, mainly implemented through the functions provided by the standard library’s<span>stdio.h</span> header file. Below is a detailed introduction to file read and write operations in C language: 1. File Pointer All file operations need to be performed through thefile pointer, defined as follows: FILE *fp; // Declare … Read more

Detailed Explanation of C++ File Input and Output Streams

Detailed Explanation of C++ File Input and Output Streams

Preface/PREFACE The standard C++ file operations are mainly accomplished through the file stream fstream. File input/output streams are used to implement file reading and storage operations, as illustrated in the following diagram: How to read from a file input stream and write to a file output stream. This requires the use of another standard library … Read more

Linux (Part 7) – File Operations with llseek and ioctl

Linux (Part 7) - File Operations with llseek and ioctl

Linux (Part 7) – File Operations with llseek and ioctl Overview In the Linux system, llseek is a system call used to control the read and write position of files. Its name comes from <span> "long long seek"</span>, indicating that it can handle positioning operations for large files (over 4GB). In simple terms, llseek acts … Read more

Installing the Linux Subsystem on Windows

Installing the Linux Subsystem on Windows

Introduction: I just realized today is the Qixi Festival after seeing it on social media. I read an article on WeChat: Quickly Build a Bioinformatics Analysis Platform on Windows. Previously, I had installed the Linux subsystem for Windows due to some overseas issues, but later uninstalled it because we had servers in the lab. Now, … Read more