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This article introduces the basic content of Linux network services, with a focus on DNS and FTP services. Linux network services are core programs that provide network functions (such as domain name

The Shell is an interface program for Linux command-line interaction (e.g., bash), and a script is a text file of commands for automating tasks. Learning Shell enhances operational efficiency (batch p

This article introduces the knowledge of Linux environment variables. Environment variables are information carriers for the system or programs (e.g., PATH records command paths). Their role is to all

This article introduces 5 essential log viewing commands for Linux server beginners, applicable to daily problem diagnosis and monitoring. The core commands and their uses are as follows: 1. **tail**:

The data on Linux servers (such as website files, business logs, etc.) is crucial and requires reliable backup to mitigate risks of data loss caused by hardware failures, misoperations, and other issu

This article addresses Linux server security issues and summarizes 5 simple hardening steps for beginners: 1. **System Update and Patch Management**: Regularly update system packages (use `apt upda

When the disk space on a Linux server is insufficient, you can resolve it by following these steps: First, execute `df -h` to check partition usage, focusing on the root directory or system directorie

Linux user management is fundamental to system maintenance, distinguishing permissions through user (UID) and group (GID) identifiers to ensure security and resource isolation. Core operations include

This article introduces 6 essential performance monitoring tools for Linux server beginners, helping them quickly grasp the "health status" of servers. System monitoring is crucial for ensuring servic

Mounting in Linux is a crucial operation to connect external storage devices (such as hard drives and USB flash drives) to the directory structure, enabling the system to read data from external devic