Some commonly used Linux commands. View the number of files in a directory ls -l | wc -l View the number of files in a directory and its subdirectories find . -type f | wc -l View the number of lines in a file wc -l file.txt Find file content and display a few lines … Read more
Table of Contents: 1. Why Discuss Modern CLI Tools? 2. Storage and Disk Management 1. Replacement for df: View Disk Space Usage → duf 2. Replacement for du: View Directory or File Size → ncdu 3. Replacement for find: Search for Files and Directories → fdfind 3. System Monitoring and Process Management 1. Replacement for … Read more
In the operation and maintenance of Linux systems, mastering efficient command operations is a fundamental requirement for every network security professional. A simple combination of commands can often automate cumbersome processes, significantly improving work efficiency. Today, I will share 20 frequently used Linux commands based on my daily work. These commands cover various aspects such … Read more
Today, we will discuss the essential Linux commands that every server engineer must master, along with the fundamental principles behind them. 1. System Monitoring and Diagnostic Commands: Your “Stethoscope” 1. top/htop – The “Real-time Monitor” of System Status # Basic Usage top # Real-time display of system processes htop # A more user-friendly alternative to … Read more
Table of Contents: 1. Advantages of Using macOS as a Home Server 2. Basic Environment Setup 1. Installing Homebrew Package Manager (Core Software Installation Source) 2. Enabling Screen Sharing 3. Enabling Remote Login 3. Recommended Core Services 1. File Sharing/Private Cloud 2. Media Center 3. Download Management 4. Notes and Documents 5. Database 6. System … Read more
A Comprehensive Guide to Linux Server Performance Troubleshooting Server Performance Troubleshooting Introduction: At 2 AM, my phone suddenly buzzed—”CPU usage has soared to 95%!” As an operations engineer, have you ever experienced such a “firefighting” moment? Don’t panic! Master this set of performance troubleshooting “combination punches”, and you can identify the root cause in 3 … Read more
During the use of Linux systems, many users find that the system’s memory usage seems to always be high, even shortly after startup, consuming a large amount of memory. This is in stark contrast to the memory management methods of Windows systems, often raising concerns about system performance. This article will delve into the reasons … Read more
When optimizing a Linux system, physical memory is one of the most important aspects. Naturally, Linux provides many methods to monitor the usage of this precious memory resource. The following list details various ways to check memory usage in a Linux system using view tools or command line. 1. /proc/meminfo The simplest way to check … Read more
The Linux operating system is widely used in servers, embedded systems, and personal computers due to its stability, security, and flexibility. Mastering common Linux commands is fundamental to efficiently using the Linux system. This article systematically introduces common Linux commands, covering file management, system monitoring, user management, and more. 1. File and Directory Management File … Read more
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