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Linux server time synchronization is a fundamental and critical task. The Network Time Protocol (NTP) is the core tool that addresses issues such as log chaos, service authentication failures, and dat

This article introduces the core knowledge of Linux user and user group management, aiming to achieve permission control and resource isolation. Users are categorized into root (UID 0, highest privile

SSH key-based login (passwordless login) ensures security through asymmetric encryption and eliminates the need to enter passwords, making it suitable for Linux server management. Traditional password

Linux logs are the "system diaries" that record system operation events and anomalies, serving as the core clue for fault diagnosis (e.g., web service failures can be located via logs for 404 errors o

This article introduces the core process management commands in the Linux system, helping beginners quickly solve daily problems. **Viewing Processes**: The `ps` command lists process statuses. A c

To install software on Linux, Yum or Apt package managers are required, which automatically handle downloading, dependencies, and updates. Yum is used for RHEL/CentOS/Fedora, managing .rpm packages. I

Shell scripts are automated execution tools in Linux that write commands into a text file in sequence to replace repetitive manual operations and improve efficiency. They are essential skills for serv

This article introduces the method of setting up an vsftpd FTP server on Linux systems. FTP is a standard protocol for network file transfer, and vsftpd has become a popular choice for Linux due to it

This article introduces the principles, Linux configuration, and setup methods of DNS (Domain Name System). DNS, often referred to as the "phone book" of the Internet, translates domain names (e.g., b

The IP address of a Linux server is the foundation for device communication (like a "house number"). IPv4 consists of 4 groups of numbers ranging from 0 to 255 (e.g., 192.168.1.100) and is used to loc