Server response is slow, services fail to start, disk space is running low… When faced with these common issues, blindly restarting the server not only fails to address the root cause but may also obscure the real problems. This article compiles 10 key <span>Linux</span> commands, along with detailed usage methods and scenario descriptions, to help … Read more
In the previous chapter, we discussed the workflow of disks and several typical metrics for evaluating disk performance, along with a brief introduction to these metrics and the tools for obtaining them. For detailed information, please refer to: Linux Performance Tuning: A Detailed Explanation of Disk Workflow and Performance Metrics. Today, we will focus again … Read more
In-Depth Analysis of <span>top</span> Command: A Powerful Tool for Linux System Monitoring and Performance Analysis In the daily operation and maintenance of Linux and Unix-like operating systems, understanding the system’s operational status and mastering resource usage is key to ensuring stable and efficient services. For system administrators, operations engineers, and even developers, there is one … Read more
Linux Top Command Usage Tutorial and Tips 1. Basic Usage Starting top # Start directly top # Set refresh interval (seconds) top -d 2 # Show only processes of a specific user top -u username # Hide idle processes on startup top -i 2. Overview of the Top Interface top – 10:30:00 up 10 days, … Read more
Comprehensive Approach to Linux Hacker Intrusion Detection Check accounts to see if there are any new users. Check if there are accounts with UID and GID equal to 0. A UID of 0 indicates root privileges. Check users with root privileges. Check the modification dates of user files. Check for users with empty passwords (the … Read more
Buffer and Cache are present in the output of the free command: $ free total used free shared buff/cache available Mem: 8169348 263524 6875352 668 1030472 7611064 Swap: 0 0 0 Note that the output of free may vary between different versions. This output includes specific usage statistics for physical memory Mem and swap partition … Read more
(Pretending to pull up the terminal by tapping the spacebar twice) As a Linux operator or developer, you have certainly encountered the existential question, “The system is lagging, who is consuming resources?” — at this moment, there is no need to panic; just type top, and the characters that pop up on the screen are … Read more
Linux System Performance Metrics In today’s digital age, Linux, as a representative of open-source operating systems, is widely used in servers, cloud computing, embedded devices, and development environments. System performance metrics are key to assessing the health of Linux systems. By monitoring these metrics, administrators can promptly identify bottlenecks, optimize resource allocation, and ensure business … Read more
Practical Guide to Viewing and Controlling Processes in Linux! Master Process Management with 5 Commands to Eliminate Lag and Crashes In daily Linux operations, process management is one of the core skills — when the system lags, services become unresponsive, or resource usage anomalies need to be investigated, it is essential to “view processes” to … Read more
This article compiles the most commonly used basic commands in the Linux system, covering file operations, user management, system monitoring, and network management, suitable for beginners to learn.📂 File and Directory Management1. Display directory contents ls -al Description: Displays all files in the current directory, including hidden files.2. Show current path pwd Description: Outputs the … Read more