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5000 articles · Page 26 of 50
Deepin Linux
Deepin Linux
Jan 10, 2024 · Fundamentals

Understanding the ftrace Architecture: Ring Buffer, Tracers, and Trace Events in the Linux Kernel

This article explains the Linux kernel ftrace architecture, covering ring buffer principles and code, tracer implementations (function, function_graph, irq_off), trace events, dynamic and static instrumentation, and kprobe mechanisms, illustrating how tracing is integrated, managed, and optimized for various execution contexts.

KprobeLinuxTrace Events
0 likes · 15 min read
Understanding the ftrace Architecture: Ring Buffer, Tracers, and Trace Events in the Linux Kernel
Liangxu Linux
Liangxu Linux
Jan 9, 2024 · Fundamentals

Boost Your Linux Productivity: Essential Bash Keyboard Shortcuts

Learn how to dramatically speed up your Linux command line workflow by mastering essential Bash navigation, editing, history, and process‑control keyboard shortcuts, each illustrated with clear examples and images, so you can work more efficiently and confidently in the terminal.

Linuxbashkeyboard shortcuts
0 likes · 4 min read
Boost Your Linux Productivity: Essential Bash Keyboard Shortcuts
Efficient Ops
Efficient Ops
Jan 9, 2024 · Operations

35 Must‑Know Linux Operations Interview Questions & Answers

This comprehensive guide compiles 35 essential Linux operations interview questions covering server management, RAID configurations, load balancing with LVS/Nginx/HAProxy, proxy choices, middleware, MySQL troubleshooting, networking tools, security practices, and practical scripts, providing concise answers to help candidates ace DevOps and sysadmin roles.

LinuxMySQLOperations
0 likes · 34 min read
35 Must‑Know Linux Operations Interview Questions & Answers
Deepin Linux
Deepin Linux
Jan 9, 2024 · Fundamentals

Linux System and Kernel Interview Questions – 100+ Topics and Code Examples

A comprehensive collection of over 100 Linux system and kernel interview questions, covering topics such as distributions, package management, process monitoring, memory management, file systems, system calls, concurrency, C/C++ language features, data structures, algorithms, and practical code examples for developers preparing for technical interviews.

C++LinuxOperating Systems
0 likes · 88 min read
Linux System and Kernel Interview Questions – 100+ Topics and Code Examples
Liangxu Linux
Liangxu Linux
Jan 8, 2024 · Operations

Master Linux System Logs: Command-Line Tools, Log Files, and GUI Viewers

This guide explains how to use Linux command-line utilities like journalctl and dmesg, directly inspect common log files such as /var/log/messages and /var/log/syslog, and employ graphical log viewers including GNOME Logs, KSystemLog, and Logwatch for effective system monitoring and troubleshooting.

Linuxdmesgjournalctl
0 likes · 5 min read
Master Linux System Logs: Command-Line Tools, Log Files, and GUI Viewers
dbaplus Community
dbaplus Community
Jan 8, 2024 · Operations

How a Simple Time Adjustment Sparked a Massive Outage: Real Ops Incident Stories

Three real-world operations mishaps are recounted—a mistaken system‑time change that logged out thousands of users, an accidental bulk delete of database accounts, and a failed glibc downgrade that stalled a software release—illustrating the cascading impact of small errors and the urgent remediation steps taken.

LinuxOperationsdatabase
0 likes · 8 min read
How a Simple Time Adjustment Sparked a Massive Outage: Real Ops Incident Stories
Open Source Linux
Open Source Linux
Jan 8, 2024 · Operations

Master Linux System Logs: Commands, Files, and GUI Tools

Learn how to view and analyze Linux system logs using command-line utilities like journalctl and dmesg, explore key log files such as /var/log/messages and /var/log/auth.log, and discover graphical tools like GNOME Logs and Logwatch for effective troubleshooting and performance monitoring.

LinuxLog Managementdmesg
0 likes · 5 min read
Master Linux System Logs: Commands, Files, and GUI Tools
Efficient Ops
Efficient Ops
Jan 7, 2024 · Operations

Essential Linux Command Cheat Sheet for System Administrators

This comprehensive guide lists essential Linux commands for system information, shutdown, file management, searching, mounting, disk usage, user and group handling, permissions, special attributes, packaging, RPM/YUM/DEB management, network utilities, and Vim editing, providing clear examples and options for each task.

LinuxLinux CommandsShell
0 likes · 39 min read
Essential Linux Command Cheat Sheet for System Administrators
Java Tech Enthusiast
Java Tech Enthusiast
Jan 7, 2024 · Operations

Using the Linux top Command for Real-Time System Monitoring

The Linux top command offers a dynamic, real‑time view of system processes and resource usage—showing overall statistics, CPU and memory breakdowns, and detailed process columns—while supporting customizable refresh intervals, batch mode, and interactive shortcuts for sorting, column selection, and monitoring crucial metrics like %idle, %wa, and %steal.

CPULinuxops
0 likes · 7 min read
Using the Linux top Command for Real-Time System Monitoring
Liangxu Linux
Liangxu Linux
Jan 6, 2024 · Operations

Step-by-Step Guide to Setting Up NFS on Rocky Linux 8.9

This tutorial walks through installing NFS utilities, configuring the server and client, setting export permissions, enabling required services and firewall rules, and mounting the shared directory permanently on Rocky Linux 8.9 systems.

LinuxNFSfile sharing
0 likes · 11 min read
Step-by-Step Guide to Setting Up NFS on Rocky Linux 8.9
Open Source Linux
Open Source Linux
Jan 4, 2024 · Fundamentals

How DMA and Zero‑Copy Boost I/O Performance: A Deep Dive

This article explains Direct Memory Access (DMA), compares it with traditional I/O, details the complete DMA‑based I/O workflow, and explores zero‑copy techniques such as mmap, sendfile, and asynchronous I/O, highlighting their impact on context switches, data copies, and overall transfer performance.

DMAI/O optimizationLinux
0 likes · 14 min read
How DMA and Zero‑Copy Boost I/O Performance: A Deep Dive
Architecture Development Notes
Architecture Development Notes
Jan 3, 2024 · Cloud Native

Build a Kubernetes Cluster with kubeadm: Step‑by‑Step Guide

This guide walks you through preparing Linux machines, configuring system settings, installing Docker and Kubernetes components with kubeadm, initializing a master node, deploying a pod network, joining worker nodes, and verifying the cluster, providing a complete step‑by‑step tutorial for building a Kubernetes cluster.

Cluster SetupDockerFlannel
0 likes · 7 min read
Build a Kubernetes Cluster with kubeadm: Step‑by‑Step Guide
Open Source Tech Hub
Open Source Tech Hub
Jan 3, 2024 · Backend Development

How to Package Webman into a Standalone Linux Binary (x86_64)

This guide explains how to install Webman, configure the project, build a self‑contained binary for x86_64 Linux using PHP's phar mechanism, run and monitor the binary, and outlines important compatibility notes and alternative manual packaging methods.

BackendLinuxPHP
0 likes · 8 min read
How to Package Webman into a Standalone Linux Binary (x86_64)
MaGe Linux Operations
MaGe Linux Operations
Dec 31, 2023 · Operations

Mastering LVM on Linux: Step‑by‑Step Guide to Create, Extend, and Manage Logical Volumes

This article provides a comprehensive, hands‑on tutorial for Linux Logical Volume Manager (LVM), covering installation environment setup, creating physical volumes, volume groups, logical volumes, extending them, resizing file systems, and adding new disks, complete with command‑line examples and explanations.

LVMLinuxLogical Volume Manager
0 likes · 19 min read
Mastering LVM on Linux: Step‑by‑Step Guide to Create, Extend, and Manage Logical Volumes
MaGe Linux Operations
MaGe Linux Operations
Dec 31, 2023 · Operations

Master Chrony: Precise NTP Time Sync on Linux Servers

This guide introduces Chrony, an open‑source NTP client for Unix‑like systems, and walks through setting up a two‑server lab on Rocky Linux, configuring chronyd and chronyc, adjusting firewall rules, and interpreting synchronization status to achieve precise time keeping.

ChronycChronydLinux
0 likes · 9 min read
Master Chrony: Precise NTP Time Sync on Linux Servers
21CTO
21CTO
Dec 31, 2023 · Artificial Intelligence

Google Cuts, OpenAI Hits $1.6B, EU’s JUPITER Supercomputer & 22° Linux Screen Twist

The article reports on Google’s planned 30,000‑plus layoffs amid its AI transformation, OpenAI’s annual revenue surpassing $1.6 billion, the EU’s upcoming JUPITER exaflop supercomputer built with 24,000 Nvidia GH200 GPUs, and a Linux developer’s claim that a 22° screen rotation offers the optimal view for software development.

Artificial IntelligenceGoogleLinux
0 likes · 8 min read
Google Cuts, OpenAI Hits $1.6B, EU’s JUPITER Supercomputer & 22° Linux Screen Twist
IT Niuke
IT Niuke
Dec 30, 2023 · Operations

Mastering tcpdump: A Complete Guide to Command‑Line Packet Capture

This article provides a thorough walkthrough of tcpdump, covering installation on Ubuntu, essential command‑line options, practical filtering techniques, logical expressions, examples for saving and reading capture files, and how to combine tcpdump with Wireshark for deeper packet analysis.

Linuxcommand linelibpcap
0 likes · 24 min read
Mastering tcpdump: A Complete Guide to Command‑Line Packet Capture
Open Source Linux
Open Source Linux
Dec 28, 2023 · Operations

Master Logwatch: Install and Analyze Linux Logs Efficiently

This guide explains why manual log review is tedious, introduces Logwatch as an automated solution, walks through installing it on CentOS, configuring its core settings, running it manually, and interpreting its concise email reports to simplify Linux system log management.

CentOSLinuxlog-analysis
0 likes · 7 min read
Master Logwatch: Install and Analyze Linux Logs Efficiently
21CTO
21CTO
Dec 26, 2023 · Fundamentals

Why Linus Torvalds Paused the Linux 6.7 Release Over Christmas

Linus Torvalds announced a holiday break during Christmas, postponing the final Linux 6.7 release to early January and explaining the impact of the season on the kernel release schedule and upcoming release candidates.

Linus TorvaldsLinuxkernel development
0 likes · 4 min read
Why Linus Torvalds Paused the Linux 6.7 Release Over Christmas
MaGe Linux Operations
MaGe Linux Operations
Dec 26, 2023 · Operations

Master NFS: Step‑by‑Step Configuration on Rocky Linux

This guide explains what NFS is, walks through setting up a Rocky Linux NFS server and client, covers installing packages, configuring export directories, adjusting permissions, editing /etc/exports, enabling rpcbind and NFS services, opening firewall ports, and mounting the share on the client.

LinuxNFSfile sharing
0 likes · 11 min read
Master NFS: Step‑by‑Step Configuration on Rocky Linux
MaGe Linux Operations
MaGe Linux Operations
Dec 17, 2023 · Fundamentals

How Linux Kernel Manages Dynamic Memory and Process Address Space

This article explains how the Linux kernel allocates dynamic memory, distinguishes kernel and user‑space allocation strategies, describes the mm_struct layout of a process address space, and shows how pages and page tables translate virtual addresses to physical memory.

KernelLinuxVirtual Memory
0 likes · 10 min read
How Linux Kernel Manages Dynamic Memory and Process Address Space
Java High-Performance Architecture
Java High-Performance Architecture
Dec 15, 2023 · Operations

Boost Your Network Testing: How dperf Achieves 10 M HTTP Connections per Second

dperf, Baidu’s open‑source DPDK‑based tool, delivers ultra‑high‑performance network testing by generating up to ten million HTTP connections per second, hundreds of gigabits of throughput, and detailed per‑second statistics, with step‑by‑step guidance on environment setup, compilation, and execution.

DPDKHigh PerformanceLinux
0 likes · 8 min read
Boost Your Network Testing: How dperf Achieves 10 M HTTP Connections per Second
php Courses
php Courses
Dec 14, 2023 · Backend Development

Building a Simple Web Crawler with PHP on Linux

This article explains how to create a basic web crawler in a Linux environment using PHP, covering prerequisite installations, script development with cURL and DOMDocument, execution steps, and sample output while emphasizing legal and ethical considerations for web scraping.

DOMDocumentLinuxPHP
0 likes · 4 min read
Building a Simple Web Crawler with PHP on Linux
Open Source Linux
Open Source Linux
Dec 14, 2023 · Fundamentals

Mastering IP Addresses: From ifconfig to CIDR and Beyond

Learn how to view and interpret IP addresses on Windows and Linux using commands like ipconfig, ifconfig, and ip addr, understand the differences between ifconfig and ip addr, explore IPv4 classes, CIDR notation, public vs private IPs, and MAC addresses, and network interface flags.

CIDRLinuxMAC address
0 likes · 15 min read
Mastering IP Addresses: From ifconfig to CIDR and Beyond
Deepin Linux
Deepin Linux
Dec 13, 2023 · Fundamentals

CVTE Embedded Technology Interview Experience and Key Technical Concepts

This article presents a comprehensive collection of CVTE embedded engineering interview questions and answers, covering project introductions, C/C++ operators, the static keyword, pointers vs. references, copy constructors, Linux sed usage, file system types, I²C limits, interrupt handling, recursion, IPC, GPIO modes, and compilation stages, providing clear explanations and code examples for each topic.

C++HardwareLinux
0 likes · 24 min read
CVTE Embedded Technology Interview Experience and Key Technical Concepts
MaGe Linux Operations
MaGe Linux Operations
Dec 13, 2023 · Operations

Master Linux Startup: rc.local, init.d, and systemd Explained

This article explains three common Linux startup methods—traditional /etc/rc.local, legacy SysVinit scripts in /etc/init.d/, and the modern systemd unit system—detailing their roles, execution contexts, and how systemd has largely replaced older approaches.

Linuxinit scriptsinit.d
0 likes · 4 min read
Master Linux Startup: rc.local, init.d, and systemd Explained
Liangxu Linux
Liangxu Linux
Dec 11, 2023 · Fundamentals

How to Squeeze Extra RAM on a Resource‑Constrained Embedded Linux Device

This article examines memory usage on a Junzheng T31ZC embedded Linux board, breaks down physical and kernel allocations, and presents practical techniques—such as trimming kernel symbols, stripping ELF files, optimizing rootfs, and manually dropping caches—to reclaim valuable RAM without adding hardware.

LinuxMemory OptimizationRootFS
0 likes · 13 min read
How to Squeeze Extra RAM on a Resource‑Constrained Embedded Linux Device
Deepin Linux
Deepin Linux
Dec 11, 2023 · Fundamentals

Embedded Systems Interview Guide: Linux Thread Scheduling, STM32 Configuration, Synchronization, and Debugging

This article provides a comprehensive interview guide for embedded system positions, covering Linux thread scheduling, single‑core CPU execution, STM32 chip specifications, SPI communication, DMA, synchronization primitives, priority inversion solutions, debugging techniques, and memory layout fundamentals.

LinuxSTM32debugging
0 likes · 26 min read
Embedded Systems Interview Guide: Linux Thread Scheduling, STM32 Configuration, Synchronization, and Debugging
Deepin Linux
Deepin Linux
Dec 9, 2023 · Fundamentals

Linux Page Reclaim Mechanism and Memory Compaction: Detailed Source Code Analysis

This article explains the Linux page‑reclaim mechanism, its goals, common techniques, the allocation paths, LRU data structures, and provides an in‑depth walkthrough of the kernel source code for slow‑path reclaim, direct reclaim, and memory compaction, including all relevant functions and code snippets.

Linuxcompactionpage reclaim
0 likes · 80 min read
Linux Page Reclaim Mechanism and Memory Compaction: Detailed Source Code Analysis
21CTO
21CTO
Dec 8, 2023 · Fundamentals

Linus Torvalds on Linux’s Future: Rust, AI, and the Human Cost of Kernel Maintenance

At a recent open‑source summit in Japan, Linus Torvalds discussed the upcoming Linux 6.7 release, the growing role of Rust in the kernel, maintainer fatigue, and how artificial intelligence may assist developers while highlighting the social challenges of open‑source collaboration.

Artificial IntelligenceLinuxRust
0 likes · 10 min read
Linus Torvalds on Linux’s Future: Rust, AI, and the Human Cost of Kernel Maintenance
Efficient Ops
Efficient Ops
Dec 5, 2023 · Operations

Why Operations Engineers Are Anything But Low-Level: Skills, Challenges, and Real-World Stories

This article compiles insights from multiple Zhihu contributors who explain how modern operations work spans basic system setup, complex hardware and network management, deep Linux kernel debugging, comprehensive monitoring, rapid incident response, and rigorous security, highlighting why ops expertise is essential and far from low‑level.

LinuxNetworkingsecurity
0 likes · 14 min read
Why Operations Engineers Are Anything But Low-Level: Skills, Challenges, and Real-World Stories
Deepin Linux
Deepin Linux
Dec 4, 2023 · Fundamentals

Linux Memory Management: Bootmem, Buddy, and Slab Allocators Explained

This article provides an in‑depth overview of Linux memory management, covering the three primary allocators—bootmem, buddy, and slab—including their data structures, initialization, allocation and free mechanisms, code examples, and the role of memblock and zone watermarks.

AllocatorsLinuxSlab Allocator
0 likes · 67 min read
Linux Memory Management: Bootmem, Buddy, and Slab Allocators Explained
Open Source Linux
Open Source Linux
Dec 4, 2023 · Fundamentals

Mastering Linux Text Processing: A Deep Dive into awk, grep, and sed

This comprehensive guide explains the core Linux text‑processing utilities—awk, grep, and sed—covering their purposes, syntax, common options, powerful regular‑expression features, practical examples, control structures, arrays, functions, and how they compare to each other for efficient command‑line data manipulation.

Linuxawkgrep
0 likes · 33 min read
Mastering Linux Text Processing: A Deep Dive into awk, grep, and sed
Senior Brother's Insights
Senior Brother's Insights
Dec 2, 2023 · Operations

Boost Your Linux Terminal Efficiency with thefuck, btop, fzf, and tldr

Discover four powerful Linux terminal utilities—TheFuck for auto-correcting mistyped commands, btop for interactive system monitoring, fzf for fast fuzzy file searching, and tldr for concise command cheat sheets—along with installation steps, usage examples, and customization tips to streamline your workflow.

Linuxbtop++command-line-tools
0 likes · 8 min read
Boost Your Linux Terminal Efficiency with thefuck, btop, fzf, and tldr
Software Development Quality
Software Development Quality
Nov 28, 2023 · Information Security

D‑Eyes: Fast Incident‑Response Scanning for Ransomware, Malware & Host Configs

D‑Eyes is an open‑source detection and response tool from NSFOCUS that runs on Windows and Linux, offering command‑line utilities to scan files, processes, host information, network connections, and perform baseline and software‑supply‑chain checks, with built‑in YARA rules for ransomware, mining malware, botnets, and webshells.

LinuxSecurity ToolYARA
0 likes · 9 min read
D‑Eyes: Fast Incident‑Response Scanning for Ransomware, Malware & Host Configs
Deepin Linux
Deepin Linux
Nov 24, 2023 · Fundamentals

Embedded Software Interview Experience and Technical Review

This article shares a comprehensive embedded software interview guide, covering written‑test topics such as structs vs. unions, linked lists, pointer safety, endianness detection, and a strcpy implementation, followed by technical interview tips, HR interview advice, and concluding remarks.

C++Data StructuresLinux
0 likes · 22 min read
Embedded Software Interview Experience and Technical Review
Deepin Linux
Deepin Linux
Nov 23, 2023 · Fundamentals

30 Essential Embedded Linux Interview Questions and Answers

This article compiles 30 common embedded Linux interview questions covering Linux basics, kernel components, memory management, process scheduling, I/O subsystems, inter-process communication, system calls, bootloader processes, and essential command-line tools, providing concise explanations to help candidates prepare for embedded system positions.

Linuxinterview
0 likes · 41 min read
30 Essential Embedded Linux Interview Questions and Answers
Didi Tech
Didi Tech
Nov 21, 2023 · Databases

Investigation and Root Cause Analysis of a Redis Memory Leak in Production

An in‑depth, timeline‑driven investigation of a production Redis memory leak revealed that the custom 3.2.8 build’s getKeysInSlot function failed to free a temporary key‑array after traversing the radix‑tree, causing hundreds of megabytes of leaked SDS strings, which was fixed by adding a single free call and highlighted the need for functional code reviews and early leak detection.

LinuxMemory LeakRedis
0 likes · 10 min read
Investigation and Root Cause Analysis of a Redis Memory Leak in Production
ITPUB
ITPUB
Nov 21, 2023 · Operations

How I Survived an Accidental rm -fr /* Disaster and Restored My Server

A developer recounts accidentally running rm -fr /* on a production server, explains how quick interruption, clever use of remaining commands, and step‑by‑step recovery restored critical directories, and shares practical safeguards to prevent such catastrophic deletions in the future.

LinuxShellbackup
0 likes · 11 min read
How I Survived an Accidental rm -fr /* Disaster and Restored My Server
Deepin Linux
Deepin Linux
Nov 20, 2023 · Fundamentals

Linux Memory Allocation Mechanisms: malloc, kmalloc, vmalloc, mmap, and Slab

This article explains Linux's flexible memory allocation system, covering user‑space malloc, kernel‑space kmalloc, vmalloc for large buffers, mmap for file and anonymous mappings, page allocation functions, the slab allocator, and memory pools, with detailed code examples and operational insights.

Linuxkmallocmalloc
0 likes · 30 min read
Linux Memory Allocation Mechanisms: malloc, kmalloc, vmalloc, mmap, and Slab
Code of Duty
Code of Duty
Nov 17, 2023 · Fundamentals

Quick Guide to Installing and Using Git for Version Control

This article walks through checking whether Git is installed, detecting the Linux distribution, installing Git via apt‑get or yum, configuring user information, generating SSH keys, cloning a repository, and provides a concise list of essential Git commands for everyday version‑control tasks.

CentOSGitLinux
0 likes · 7 min read
Quick Guide to Installing and Using Git for Version Control
Open Source Linux
Open Source Linux
Nov 17, 2023 · Databases

How Large Linux Pages Boost Database Performance on Kubernetes

This article explains how using larger Linux page sizes—especially 2 MB hugepages—dramatically improves database throughput on Kubernetes nodes by reducing TLB cache misses, and provides practical guidance on configuring hugepages, disabling transparent hugepages, and sizing resources for optimal performance.

HugePagesKubernetesLinux
0 likes · 13 min read
How Large Linux Pages Boost Database Performance on Kubernetes
Deepin Linux
Deepin Linux
Nov 16, 2023 · Fundamentals

Understanding the Linux Completely Fair Scheduler (CFS)

An in‑depth overview of Linux’s Completely Fair Scheduler (CFS) explains its design goals, data structures such as red‑black trees and virtual runtime, the evolution from O(n) and O(1) schedulers, weight‑based fairness calculations, scheduling classes, and key kernel functions that implement task selection and timing.

CFSLinuxscheduler
0 likes · 31 min read
Understanding the Linux Completely Fair Scheduler (CFS)
Test Development Learning Exchange
Test Development Learning Exchange
Nov 13, 2023 · Fundamentals

Master Core Python, Database, Linux, and Networking Concepts in One Guide

This comprehensive guide covers essential programming fundamentals—including Python memory management, metaclasses, decorators, multithreading, data structures, algorithmic techniques, database concepts such as ACID, indexing, and transaction isolation, Redis operations, Linux memory handling, networking protocols, Docker/Kubernetes commands, and core testing methodologies—providing clear explanations and practical code examples.

AlgorithmsLinuxNetworking
0 likes · 38 min read
Master Core Python, Database, Linux, and Networking Concepts in One Guide
Open Source Linux
Open Source Linux
Nov 13, 2023 · Information Security

How NetBird Simplifies Secure Peer-to-Peer VPNs Without a Central Server

NetBird is an open‑source, WireGuard‑based network management platform that creates secure, direct encrypted tunnels between computers, devices, and servers without a central VPN, supporting cloud, on‑premise, edge and container environments, and offers quick deployment via simple installation steps on Linux and macOS.

LinuxNetBirdNetwork Management
0 likes · 5 min read
How NetBird Simplifies Secure Peer-to-Peer VPNs Without a Central Server
Ubuntu
Ubuntu
Nov 10, 2023 · Fundamentals

Comprehensive Linux Command Cheat Sheet

The article provides a concise collection of essential Linux system commands, offering a quick‑reference cheat sheet for users to perform common tasks such as file manipulation, process control, system monitoring, and network operations.

LinuxShellcommand line
0 likes · 1 min read
Comprehensive Linux Command Cheat Sheet
Deepin Linux
Deepin Linux
Nov 10, 2023 · Fundamentals

Comprehensive Guide to Linux (CentOS 7) Installation, Configuration, and Basic Commands

This article provides a step‑by‑step tutorial on Linux fundamentals, covering the basic concepts of the operating system, how to obtain and install CentOS 7 in a virtual machine, configure networking, perform system installation, use essential command‑line tools, troubleshoot common issues, and apply basic optimizations.

CommandLineLinuxSystemAdministration
0 likes · 23 min read
Comprehensive Guide to Linux (CentOS 7) Installation, Configuration, and Basic Commands
Open Source Linux
Open Source Linux
Nov 10, 2023 · Fundamentals

Understanding Linux Process Sleep, Wakeup, and How to Avoid Invalid Wakeups

This article explains Linux process states, the difference between runnable, interruptible and uninterruptible sleep, how the scheduler and schedule() function manage sleep and wakeup, demonstrates code examples, and discusses the invalid wakeup problem with strategies to prevent it in kernel development.

Linuxinvalid wakeupprocess scheduling
0 likes · 11 min read
Understanding Linux Process Sleep, Wakeup, and How to Avoid Invalid Wakeups
Programmer DD
Programmer DD
Nov 9, 2023 · Fundamentals

Why Linux Feels Hard and How to Master the Command Line in 5 Simple Steps

The article explains why beginners find Linux difficult—due to diverse distributions, command‑line unfamiliarity, package management, and configuration—then outlines Unix philosophy, key command‑line traits, and a practical five‑step approach to confidently learn and use Linux commands.

LearningLinuxUnix Philosophy
0 likes · 9 min read
Why Linux Feels Hard and How to Master the Command Line in 5 Simple Steps
21CTO
21CTO
Nov 8, 2023 · Fundamentals

Top 8 Must-Visit Linux Websites Every Developer Should Bookmark

Discover a curated list of eight essential Linux websites—including ArchWiki, Explainshell, crontab.guru, Distrowatch, Phoronix, Ubuntu Blog, GamingOnLinux, and the /r/Linux subreddit—that provide tutorials, documentation, tools, and community insights for both newcomers and seasoned users.

LinuxWeb Resourcessystem administration
0 likes · 6 min read
Top 8 Must-Visit Linux Websites Every Developer Should Bookmark
Open Source Linux
Open Source Linux
Nov 7, 2023 · Operations

12 Essential Linux Commands to Monitor Memory Usage

This guide lists twelve Linux tools and commands—including /proc/meminfo, atop, free, GNOME System Monitor, htop, KDE System Monitor, memstat, nmon, ps, smem, top, and vmstat—that let you view and analyze RAM consumption in real time, with usage examples and screenshots.

Linuxmemory monitoringprocfs
0 likes · 6 min read
12 Essential Linux Commands to Monitor Memory Usage
Deepin Linux
Deepin Linux
Nov 5, 2023 · Fundamentals

Understanding Linux ARM Interrupt Mechanism and Kernel Implementation

This article explains the ARM hardware interrupt flow, the Linux kernel's handling of IRQ and FIQ, the construction of exception vector tables, the role of asmlinkage, interrupt registration, shared interrupt models, and the specific implementation for the S3C2410 platform.

ARMLinuxdevice-drivers
0 likes · 18 min read
Understanding Linux ARM Interrupt Mechanism and Kernel Implementation
Liangxu Linux
Liangxu Linux
Nov 1, 2023 · Operations

Mastering Rsync: From Basics to Real‑Time Sync with Inotify

This guide explains rsync's fundamentals, usage in ssh and daemon modes, detailed configuration options, and how to combine it with inotify‑tools for real‑time, bidirectional file synchronization on Linux systems, including practical command examples and scripting tips.

Linuxdaemonfile synchronization
0 likes · 18 min read
Mastering Rsync: From Basics to Real‑Time Sync with Inotify
Laravel Tech Community
Laravel Tech Community
Oct 29, 2023 · Fundamentals

The Past and Present of CentOS and Its Alternatives

This article traces the evolution of CentOS within the Linux ecosystem, explains the shift to CentOS Stream, outlines the end‑of‑life schedule, and evaluates various replacement distributions—including Rocky Linux, Ubuntu, Oracle Linux, and several Chinese OS projects—providing guidance for different enterprise and development scenarios.

CentOSLinuxOperating Systems
0 likes · 8 min read
The Past and Present of CentOS and Its Alternatives
Ubuntu
Ubuntu
Oct 28, 2023 · Fundamentals

Essential Linux Commands Cheat Sheet

This article provides a concise visual cheat sheet of essential Linux system commands, covering file navigation, process management, permission handling, networking utilities, and system monitoring, enabling readers to quickly reference and execute common tasks in a Linux environment.

LinuxShellUnix
0 likes · 1 min read
Essential Linux Commands Cheat Sheet
Deepin Linux
Deepin Linux
Oct 27, 2023 · Fundamentals

Understanding Linux Kernel I/O Mechanisms, File Systems, and Block I/O Scheduling

This article provides a comprehensive overview of Linux kernel I/O mechanisms, including file system interfaces, blocking and non‑blocking I/O, asynchronous models, multiplexing with select/epoll, EXT file‑system structures, VFS abstraction, consistency and journaling, as well as the complete block I/O path, scheduling algorithms, and debugging tools.

Block I/OFile SystemI/O
0 likes · 29 min read
Understanding Linux Kernel I/O Mechanisms, File Systems, and Block I/O Scheduling
Laravel Tech Community
Laravel Tech Community
Oct 24, 2023 · Information Security

Configuring Firewalld on CentOS to Restrict Access to Specific Ports and IP Addresses

This article explains what Firewalld is, outlines its key features such as zones, runtime versus permanent settings, services, and dynamic updates, and provides step‑by‑step commands to create firewall rules that limit access to an Nginx server on port 8088 to a single IP address while leaving other ports unrestricted.

CentOSLinuxfirewall
0 likes · 8 min read
Configuring Firewalld on CentOS to Restrict Access to Specific Ports and IP Addresses
Code Ape Tech Column
Code Ape Tech Column
Oct 24, 2023 · Big Data

Synchronizing MySQL Data to Elasticsearch Using Logstash

This tutorial explains how to set up the environment, configure Elasticsearch and Logstash, create the necessary MySQL tables, and use a Logstash pipeline to continuously sync MySQL records into an Elasticsearch index, while also covering common pitfalls and troubleshooting steps.

ETLElasticsearchLinux
0 likes · 12 min read
Synchronizing MySQL Data to Elasticsearch Using Logstash
Liangxu Linux
Liangxu Linux
Oct 23, 2023 · Fundamentals

Unlock Faster, Safer Embedded Systems with Asymmetric AMP Dual‑OS Architecture

This article explains the concept of asymmetric AMP dual‑system architecture, outlines its real‑time, stability, and cost advantages for industrial automation, and provides a step‑by‑step UART‑echo development example on the RK3568J SOM, including flashing commands and U‑Boot configuration.

Linuxasymmetric-ampbaremetal
0 likes · 7 min read
Unlock Faster, Safer Embedded Systems with Asymmetric AMP Dual‑OS Architecture