The common inspection commands in Linux mainly include system information viewing, resource monitoring, and network status checking. System Information Viewing uname -a: Displays kernel version, hostname, and other system information. hostname: View or set the hostname. cat /etc/redhat-release: View the operating system version (for Red Hat systems). Resource Monitoring free -m: View memory usage (in … Read more
Click the blue text to follow us 1. Introduction The chattr command is used to change the attributes of files or directories, which can control the behavior of files or directories and provide advanced file management features. 2. Syntax Syntax: chattr [options] [+/-/=attributes] file or directory Parameter Description: Parameter Description -R Recursively process directories and … Read more
In-Depth Analysis of Linux Thread Principles and Implementation Mechanisms 1. Basic Concepts and Evolution of Threads 1.1 Essential Definition of Threads In the field of operating systems, a thread is the smallest unit of program execution flow, representing an independent control sequence within a process. If a process is a container for resources, then a … Read more
Understanding ‘Administrator Privileges’ in Linux: A Detailed Guide to the sudo Command Mastering superpowers comes with great responsibility! Hello everyone! Today, we are going to talk about that powerful yet “dangerous” command in the Linux system—<span>sudo</span>. It acts like the “universal key” to the system; when used properly, it can yield great results, but when … Read more
In the world of Linux, Debian is known for its stability, but installation and configuration can be somewhat complex for beginners.SpiralLinux has emerged to lower the barrier: it is based on Debian Stable and provides a ready-to-use desktop experience, while retaining the stability and ecosystem of Debian. 📌 Official website: https://spirallinux.github.io📌 Latest version: SpiralLinux 12.231001 … Read more
Overview SQLREST is an open-source database RESTful API generation platform that quickly converts SQL queries into RESTful API interfaces. This article will detail the complete process of deploying SQLREST through source code compilation in a Linux environment. System Requirements Before starting the deployment, please ensure that your Linux server meets the following requirements: 1. System … Read more
1. Basic Concepts of Permissions (1) Users and Groups # View current user information $ id uid=1000(alice) gid=1000(alice) groups=1000(alice),10(wheel) # View system user file $ cat /etc/passwd root:x:0:0:root:/root:/bin/bash alice:x:1000:1000:Alice User:/home/alice:/bin/bash # View user group information $ cat /etc/group root:x:0:wheel:x:10:alice,bob developers:x:1001:alice,charlie (2) Basic Structure of File Permissions Permission bits example: -rwxr-xr– Position description: 1st bit: File … Read more
1. System Resource Monitoring 1.1 CPU Issue Diagnosis # Check CPU usage top htop # Sort processes by CPU usage ps aux –sort=-%cpu | head # Check CPU information lscpu cat /proc/cpuinfo # Monitor CPU usage mpstat -P ALL 1 # Check interrupt statistics cat /proc/interrupts 1.2 Memory Issue Diagnosis # Check memory usage free … Read more
1. Detailed Commands for Vim/Vi 1.1 Purpose Vim (Vi IMproved) is an enhanced version of Vi and is one of the most powerful text editors in Linux systems. Vi is the earliest text editor for Unix systems, and almost all Linux systems come pre-installed with Vi. Vim supports syntax highlighting, plugin extensions, and modal editing, … Read more
Trampolines In the field of computing, the term “trampoline” has multiple meanings. In the context of Linux systems, it specifically refers to the location in memory where the target logical address is stored, from which the program execution jumps to the actual processing logic. Such structures are also commonly referred to as “indirect jump vectors.” … Read more