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Updating the Linux system is a necessary step to ensure security and enhance performance, as it can fix vulnerabilities, optimize operations, add new features, and improve hardware compatibility. Befo

Configuring IP addresses and subnet masks on Linux servers is fundamental for network communication. An IP address (32-bit binary, dotted decimal format) identifies a device, while a subnet mask (32-b

Linux firewalls are the core of server security, filtering traffic to prevent intrusions. Major tools include: firewalld (recommended for beginners, zone-based management such as public/trusted), ipta

This article introduces the basics of Linux permission management and solutions to common problems for beginners. The permission system can be analogized to an apartment building: users (residents), g

Linux servers are the preferred choice for servers due to their stability, security, open-source nature, and ease of customization. Before installation, download the Ubuntu Server or CentOS Stream ima

This article introduces the basics of Linux service management, where mainstream distributions use the `systemctl` (systemd) tool to manage services. Key commands and their functions include: `start`/

This article explains the necessity and methods of disk cleanup and space management for Linux servers. When disk space is insufficient, the system may become slow, applications cannot be updated, and

Linux server security is crucial for beginners. This article summarizes 7 common issues and their solutions: 1. Simple and long - unused passwords: Use strong passwords (8 characters with uppercase, l

This article introduces the basics of Linux commands and commonly used tools, covering core operations and beginner tips. The basic command format is "command [options] [arguments]". Essential beginne

This article introduces Linux server installation and basic service deployment, suitable for zero-basic learners. Linux is the preferred choice for servers due to its stability and security. Unlike th