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5000 articles · Page 49 of 50
Big Data Technology & Architecture
Big Data Technology & Architecture
Aug 15, 2020 · Big Data

Step-by-Step Guide to Building an ELK Stack with Kafka, Zookeeper, Logstash, and Filebeat for Log Collection

This tutorial provides a comprehensive, step-by-step procedure for setting up a log‑collection pipeline using Filebeat, Kafka, Zookeeper, Logstash, Elasticsearch, and Kibana across multiple servers, covering hardware preparation, system tuning, software installation, configuration files, and verification commands.

ELKFilebeatKafka
0 likes · 11 min read
Step-by-Step Guide to Building an ELK Stack with Kafka, Zookeeper, Logstash, and Filebeat for Log Collection
Open Source Linux
Open Source Linux
Aug 14, 2020 · Operations

Speed Up Linux Workflows: Quick Dir Jump, Vim Tweaks, MySQL Prompt & System Info

This guide introduces several handy Linux command-line tricks, including the 'z' shortcut for rapid directory navigation, a feature‑rich Vim configuration, customizing MySQL prompts, reliable methods to display system version details, and concise commands for checking disk usage, helping users streamline their workflow.

LinuxMySQLsystem administration
0 likes · 4 min read
Speed Up Linux Workflows: Quick Dir Jump, Vim Tweaks, MySQL Prompt & System Info
Liangxu Linux
Liangxu Linux
Aug 13, 2020 · Fundamentals

Unlock Linux Performance: Master Memory, Swap, and Cache Management

This guide explains Linux's memory architecture, how virtual memory (swap) works, and provides step‑by‑step commands to adjust swappiness, release page caches, and safely free swap space, helping you optimize system performance and avoid memory‑related issues.

BuffersLinuxSwap
0 likes · 9 min read
Unlock Linux Performance: Master Memory, Swap, and Cache Management
Java Architect Essentials
Java Architect Essentials
Aug 11, 2020 · Operations

Four Essential Linux Monitoring Tools for Operations Engineers

This article introduces four widely used Linux monitoring tools—iotop, htop, IPTraf, and Monit—explaining their features, usage scenarios, and how they help operations engineers diagnose performance issues without a GUI, including real‑time I/O tracking, visual CPU/memory graphs, network traffic analysis, and flexible alerting.

IPTrafLinuxMonit
0 likes · 7 min read
Four Essential Linux Monitoring Tools for Operations Engineers
Open Source Linux
Open Source Linux
Aug 11, 2020 · Fundamentals

From Unix to Android: Tracing the Evolution of Modern Operating Systems

Explore the lineage from the 1969 birth of UNIX through the creation of Linux, the emergence of Apple's iOS, and the development of Android, highlighting key milestones, contributors, and how these systems interconnect as the foundational kernels of today’s major platforms.

AndroidLinuxOperating Systems
0 likes · 4 min read
From Unix to Android: Tracing the Evolution of Modern Operating Systems
Liangxu Linux
Liangxu Linux
Aug 10, 2020 · Fundamentals

Building a Minimal Linux Filesystem from Scratch: TinyFS Walkthrough

This article walks through the design and implementation of a tiny Linux filesystem called TinyFS, explaining the VFS layers, required POSIX interfaces, data structures, core kernel code, usage steps, current limitations, and a roadmap for extending it with proper superblocks, concurrency, and page‑cache integration.

C++KernelLinux
0 likes · 20 min read
Building a Minimal Linux Filesystem from Scratch: TinyFS Walkthrough
Liangxu Linux
Liangxu Linux
Aug 6, 2020 · Operations

Boost Your Ubuntu Productivity with 12 Essential Keyboard Shortcuts

This tutorial lists twelve practical Ubuntu keyboard shortcuts—from opening the search bar with the Super key to creating custom shortcuts—explaining how each shortcut works and how it can speed up everyday tasks and improve overall workflow efficiency.

LinuxUbuntukeyboard shortcuts
0 likes · 8 min read
Boost Your Ubuntu Productivity with 12 Essential Keyboard Shortcuts
Liangxu Linux
Liangxu Linux
Aug 5, 2020 · Operations

How to Expand an LVM Partition on CentOS 7 in Production

This guide walks you through checking current disk usage, adding a new disk, creating an LVM partition, extending the volume group and logical volume, resizing the filesystem, and verifying the expansion on a CentOS 7 system to resolve disk‑space shortages.

LVMLinuxcentos7
0 likes · 8 min read
How to Expand an LVM Partition on CentOS 7 in Production
Open Source Linux
Open Source Linux
Aug 4, 2020 · Operations

Recover Accidentally Deleted Linux Files with lsof and extundelete

This guide explains how to restore mistakenly removed Linux files by first checking if the deleting process still holds the file descriptor using lsof, then copying the open file from /proc, and finally using the extundelete tool when the process has already terminated.

Linuxextundeletefile recovery
0 likes · 7 min read
Recover Accidentally Deleted Linux Files with lsof and extundelete
Liangxu Linux
Liangxu Linux
Aug 3, 2020 · Fundamentals

Understanding Linux Memory Management: Segments, Paging, and Allocation

This article explains how Linux organizes a process's address space into text, data, and stack segments, describes virtual memory concepts such as paging, page tables, and page faults, and details the kernel's allocation, deallocation, and memory‑mapping mechanisms including brk, mmap, and the buddy allocator.

KernelLinuxpage-allocation
0 likes · 22 min read
Understanding Linux Memory Management: Segments, Paging, and Allocation
Liangxu Linux
Liangxu Linux
Aug 3, 2020 · Game Development

7 Must‑Try Linux Command‑Line Games You Can Play Without a GPU

This article introduces seven entertaining command‑line games for Linux, ranging from classic rogue‑likes like NetHack and Dwarf Fortress to text‑adventure interpreters, BSD game collections, a survival rogue‑like, the 2048 puzzle, and a multiplayer Snake, all runnable directly in a terminal.

Command-line gamesLinuxOpen-source
0 likes · 8 min read
7 Must‑Try Linux Command‑Line Games You Can Play Without a GPU
Full-Stack DevOps & Kubernetes
Full-Stack DevOps & Kubernetes
Aug 3, 2020 · Operations

How to Deploy a Ceph Distributed Storage Cluster from Scratch

This guide walks through installing and configuring a Ceph distributed storage cluster, covering node preparation, hostname and hosts setup, password‑less SSH, required packages, firewall handling, time sync, ceph‑deploy installation, monitor creation, OSD configuration, pool and RBD creation, verification, and common troubleshooting steps.

CephDevOpsLinux
0 likes · 16 min read
How to Deploy a Ceph Distributed Storage Cluster from Scratch
Architects' Tech Alliance
Architects' Tech Alliance
Aug 2, 2020 · Fundamentals

Evolution and Current Landscape of Chinese Domestic Operating Systems

This article traces the early emergence of Chinese Linux‑based operating systems, analyzes the reasons for their limited market impact, outlines the recent ecosystem improvements and policy support, and reviews key players, CPU developments, and the unified strategy behind modern domestic OS solutions such as UOS and Kylin.

CPUChinese TechnologyLinux
0 likes · 28 min read
Evolution and Current Landscape of Chinese Domestic Operating Systems
Liangxu Linux
Liangxu Linux
Aug 2, 2020 · Operations

How to List and Diagnose Failed systemd Services with systemctl

This guide explains how to use systemctl and journalctl on CentOS 7 to list services that failed to start, check individual service status, interpret error messages, and filter logs for troubleshooting, providing concrete command examples and output analysis.

CentOSLinuxjournalctl
0 likes · 7 min read
How to List and Diagnose Failed systemd Services with systemctl
Liangxu Linux
Liangxu Linux
Aug 2, 2020 · Fundamentals

Quick Guide: Set a Fixed IP on Ubuntu via System Settings

This tutorial explains why a changing desktop IP can disrupt mouse‑sharing tools and walks you through checking the current network settings, recording the IPv4 address, gateway, mask and DNS, and then configuring a static IP (e.g., 192.168.0.210) in Ubuntu’s Network settings, ending with applying the changes and rebooting.

LinuxStatic IPTutorial
0 likes · 3 min read
Quick Guide: Set a Fixed IP on Ubuntu via System Settings
Open Source Linux
Open Source Linux
Aug 1, 2020 · Operations

Master Ansible: From Basics to Advanced Automation with Playbooks

This comprehensive guide introduces Ansible, covering its core concepts, features, installation, inventory setup, ad‑hoc commands, module usage, playbook creation, handlers, and role-based organization to enable efficient, agent‑less automation across diverse Linux and network environments.

DevOpsLinuxPlaybooks
0 likes · 26 min read
Master Ansible: From Basics to Advanced Automation with Playbooks
Aikesheng Open Source Community
Aikesheng Open Source Community
Jul 30, 2020 · Databases

Using gh-ost for Online MySQL Schema Migration – Introduction, Architecture, Installation, and Practical Usage

This article provides a comprehensive guide to gh-ost, the GitHub‑released online MySQL schema migration tool, covering its design principles, three migration modes, download and RPM installation, common command‑line options, interactive socket commands, and a step‑by‑step example of altering a column type while monitoring progress and performing a safe cut‑over.

Database ToolsLinuxMySQL
0 likes · 25 min read
Using gh-ost for Online MySQL Schema Migration – Introduction, Architecture, Installation, and Practical Usage
dbaplus Community
dbaplus Community
Jul 29, 2020 · Operations

Why CPU Idle ≠ Exhausted: Uncovering IO Bottlenecks in Java Services

A real‑world incident showed that a 0% CPU idle rate can mask severe disk IO wait, leading to thread exhaustion in a SpringBoot order service, and the article explains how IO, DMA, Java thread states, and various Linux network IO models interact while offering practical mitigation tactics.

CPUIOJava
0 likes · 14 min read
Why CPU Idle ≠ Exhausted: Uncovering IO Bottlenecks in Java Services
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Jul 29, 2020 · Information Security

Master SSH: From Basics to Advanced Port Forwarding and Remote Operations

This article introduces SSH, explains its encryption fundamentals, demonstrates basic usage, remote login, various port forwarding techniques, and remote command execution, while also covering common pitfalls and security considerations, providing step‑by‑step examples and practical commands for Linux environments.

LinuxSSHport forwarding
0 likes · 13 min read
Master SSH: From Basics to Advanced Port Forwarding and Remote Operations
Liangxu Linux
Liangxu Linux
Jul 27, 2020 · Operations

Essential Linux Tools for Binary Analysis, Debugging, and Performance Profiling

This guide outlines key Linux utilities for inspecting binaries during compilation (nm, strings, strip, readelf, objdump, addr2line) and for runtime debugging and profiling (gdb, ldd, strace, ltrace, time, gprof, valgrind, mtrace, oprofile), plus an overview of the proc filesystem and common system logs.

LinuxProc FilesystemProfiling
0 likes · 17 min read
Essential Linux Tools for Binary Analysis, Debugging, and Performance Profiling
Liangxu Linux
Liangxu Linux
Jul 26, 2020 · Fundamentals

Master Linux Redirection: Streamline Input, Output, and Error Handling

This guide explains Linux redirection fundamentals, covering stdin, stdout, and stderr streams, how to view their device files, and practical examples of redirecting output, input, error messages, and using /dev/null, Here‑doc, and Here‑string to simplify command‑line workflows.

CLILinuxRedirection
0 likes · 7 min read
Master Linux Redirection: Streamline Input, Output, and Error Handling
Programmer DD
Programmer DD
Jul 26, 2020 · Operations

How to Detect and Eliminate Zombie Processes with ps and grep

This guide explains how to use the Linux ps and grep commands to identify zombie processes, interpret their status fields, and safely terminate them with kill -HUP, including steps to verify removal and alternative methods using top.

LinuxProcess ManagementZombie Process
0 likes · 3 min read
How to Detect and Eliminate Zombie Processes with ps and grep
Liangxu Linux
Liangxu Linux
Jul 24, 2020 · Operations

Quickly Inspect Linux Hardware with HardInfo

This guide explains how to install the HardInfo utility on Linux, use its graphical interface to view detailed hardware components such as CPU, RAM, motherboard, GPU, storage, network, and run built‑in benchmarks, plus how to generate a comprehensive hardware report.

HardInfoLinuxbenchmark
0 likes · 7 min read
Quickly Inspect Linux Hardware with HardInfo
Full-Stack Internet Architecture
Full-Stack Internet Architecture
Jul 24, 2020 · Fundamentals

Common Interprocess Communication Methods in Linux

This article introduces several Linux interprocess communication mechanisms—including pipes, message queues, shared memory, semaphores, signals, and sockets—explaining their principles, advantages, drawbacks, and typical usage scenarios for developers preparing for system‑level programming or interviews.

IPCLinuxSockets
0 likes · 7 min read
Common Interprocess Communication Methods in Linux
ITPUB
ITPUB
Jul 23, 2020 · Fundamentals

How Zero‑Copy Techniques Slash Data Transfer Overhead in Linux

This article explains why traditional read/write file serving incurs multiple data copies and context switches, then introduces mmap, sendfile, and splice as zero‑copy methods that reduce CPU load, discuss their usage, limitations, and practical pitfalls for high‑performance Linux servers.

I/O optimizationLinuxmmap
0 likes · 11 min read
How Zero‑Copy Techniques Slash Data Transfer Overhead in Linux
Efficient Ops
Efficient Ops
Jul 22, 2020 · Operations

Master Linux Network Commands: From netstat to ss and tcpdump

This article provides a concise yet comprehensive guide to essential Linux networking tools—including netstat, ss, sar, iftop, and tcpdump—explaining how to monitor connections, analyze traffic, troubleshoot TIME_WAIT and CLOSE_WAIT issues, and tune kernel parameters for high‑concurrency servers.

Linuxsysadmin
0 likes · 12 min read
Master Linux Network Commands: From netstat to ss and tcpdump
ITPUB
ITPUB
Jul 22, 2020 · Operations

Mastering dmesg: How to Read and Control Linux Kernel Logs

Learn how the dmesg utility reads the Linux kernel’s ring buffer, displays boot and runtime messages, and how to use its many options—such as filtering, formatting timestamps, clearing the buffer, and handling permission restrictions—to troubleshoot hardware and kernel issues effectively.

Linuxcommand linedmesg
0 likes · 7 min read
Mastering dmesg: How to Read and Control Linux Kernel Logs
Liangxu Linux
Liangxu Linux
Jul 22, 2020 · Operations

How to Fix sudo Missing Environment Variables on Linux

When using sudo, Linux resets the environment, causing custom variables to disappear; this guide explains why, shows the relevant lines in /etc/sudoers, and presents three practical methods—including sudo -E, editing env_keep and secure_path, and creating aliases—to retain needed variables.

Linuxbashenvironment variables
0 likes · 4 min read
How to Fix sudo Missing Environment Variables on Linux
Liangxu Linux
Liangxu Linux
Jul 22, 2020 · Operations

Turn an Old Laptop into a Home Cloud Server with Debian and Baota

This guide walks through converting a spare ASUS laptop into a home‑hosted cloud server by installing Debian 10, configuring the Baota control panel, setting up router NAT and static IP, automating DDNS with an open‑source script, and measuring power and bandwidth results.

BaoTa PanelDDNSDebian
0 likes · 7 min read
Turn an Old Laptop into a Home Cloud Server with Debian and Baota
DevOps Cloud Academy
DevOps Cloud Academy
Jul 22, 2020 · Operations

Chapter 2: Installing and Deploying Jenkins Server

This guide details the complete process of installing Jenkins Server, covering prerequisite Java installation, multiple deployment methods—including Tomcat, CentOS, macOS, Docker, Kubernetes, and Windows—followed by essential post‑installation configuration and resource links.

CI/CDJenkinsLinux
0 likes · 12 min read
Chapter 2: Installing and Deploying Jenkins Server
Open Source Linux
Open Source Linux
Jul 21, 2020 · Information Security

Master SSH Certificate Authentication: A Step‑by‑Step Secure Login Guide

This article explains why traditional password and key logins are vulnerable, introduces SSH certificate authentication using a Certificate Authority, and provides detailed commands and procedures for generating CA keys, issuing server and user certificates, configuring both server and client, and revoking certificates when needed.

Certificate AuthenticationCertificate AuthorityLinux
0 likes · 12 min read
Master SSH Certificate Authentication: A Step‑by‑Step Secure Login Guide
Liangxu Linux
Liangxu Linux
Jul 19, 2020 · Operations

Top 6 Modern Linux Command‑Line Tools to Replace Classic Utilities

This article reviews six contemporary Linux command‑line utilities—ncdu, htop, tldr, jq, fd, and other alternatives—that improve usability, speed, and functionality compared with traditional tools like du, top, man, grep, and find, providing installation commands and usage examples.

Linuxcommand-linefd
0 likes · 11 min read
Top 6 Modern Linux Command‑Line Tools to Replace Classic Utilities
21CTO
21CTO
Jul 17, 2020 · Fundamentals

Master Essential Linux Commands and System Administration Basics

This comprehensive guide covers fundamental Linux commands such as ls and cat, user and group management, package handling with RPM and yum, process monitoring tools, file searching utilities, scheduled task creation with at and crontab, and automating interactions using Expect, providing clear examples and code snippets for each topic.

CronLinuxcommand line
0 likes · 38 min read
Master Essential Linux Commands and System Administration Basics
Alibaba Cloud Developer
Alibaba Cloud Developer
Jul 16, 2020 · Information Security

Unraveling Kernel Crashes: A Deep Dive into Memory Dump Analysis

This article explains why operating system and driver defects cause system hangs and reboots, introduces the methodology of memory dump analysis—including deadlock and exception techniques—and walks through a real Linux kernel panic case to illustrate how to trace, diagnose, and remediate such crashes.

Kernel PanicLinuxcrash analysis
0 likes · 14 min read
Unraveling Kernel Crashes: A Deep Dive into Memory Dump Analysis
Liangxu Linux
Liangxu Linux
Jul 16, 2020 · Fundamentals

Demystifying Linux Processes, Threads, IPC, and Scheduling

This article provides a comprehensive overview of Linux fundamentals, covering process and thread concepts, the fork and exec system calls, various inter‑process communication mechanisms, memory layout, scheduling algorithms such as O(1) and CFS, synchronization primitives, and the boot sequence, all illustrated with code snippets and diagrams.

IPCLinuxscheduling
0 likes · 34 min read
Demystifying Linux Processes, Threads, IPC, and Scheduling
Liangxu Linux
Liangxu Linux
Jul 15, 2020 · Operations

Mastering dmesg: How to Read and Control Linux Kernel Logs

This tutorial explains the Linux dmesg command, covering its purpose for accessing kernel ring‑buffer messages, basic usage, common options for formatting, filtering by facility or level, permission handling, and techniques for viewing, paging, grepping, saving, and clearing kernel logs.

Linuxdmesg
0 likes · 8 min read
Mastering dmesg: How to Read and Control Linux Kernel Logs
Cloud Native Technology Community
Cloud Native Technology Community
Jul 15, 2020 · Operations

Building a Complete Linux Monitoring Dashboard with Prometheus, Pushgateway, and Grafana

This tutorial shows Linux system administrators and DevOps engineers how to create a fully customizable, distributed monitoring dashboard by installing and configuring Prometheus, Pushgateway, and Grafana, writing a Bash script to push process metrics, and visualizing CPU and memory usage with Grafana panels and PromQL queries.

DevOpsGrafanaLinux
0 likes · 14 min read
Building a Complete Linux Monitoring Dashboard with Prometheus, Pushgateway, and Grafana
Open Source Linux
Open Source Linux
Jul 15, 2020 · Fundamentals

Why Do TIME_WAIT Connections Accumulate and How to Fix Them?

This article explains why massive TIME_WAIT TCP connections appear under high concurrency, the impact on services, and practical methods—such as adjusting socket reuse and reducing TIME_WAIT duration—to prevent new connection failures.

LinuxNetworkingNginx
0 likes · 9 min read
Why Do TIME_WAIT Connections Accumulate and How to Fix Them?
Liangxu Linux
Liangxu Linux
Jul 14, 2020 · Fundamentals

How to Install and Use ccat for Colorized cat Output on Linux

This guide explains why the standard cat command lacks syntax highlighting, introduces the ccat utility that adds colored output for many programming languages, and provides step‑by‑step installation instructions for Arch and other Linux distributions, along with practical usage examples and troubleshooting tips.

Linuxbashccat
0 likes · 6 min read
How to Install and Use ccat for Colorized cat Output on Linux
Liangxu Linux
Liangxu Linux
Jul 13, 2020 · Operations

Master Linux: From Installation to Advanced System Management

This guide walks you through Linux fundamentals, installation methods, essential commands, directory and file operations, networking, firewall, package management, MySQL and Tomcat deployment, as well as user, group and scheduled‑task administration, providing practical examples and code snippets for each step.

LinuxNetworkingcommand line
0 likes · 23 min read
Master Linux: From Installation to Advanced System Management
Liangxu Linux
Liangxu Linux
Jul 12, 2020 · Fundamentals

Why Does nohup Keep a Process Running After the Terminal Closes?

This article explains how Linux signals like SIGHUP affect background processes, why using nohup (or similar tools) prevents termination when the controlling terminal exits, and provides practical examples and code for handling signals directly.

LinuxSIGHUPbackground processes
0 likes · 9 min read
Why Does nohup Keep a Process Running After the Terminal Closes?
DevOps Cloud Academy
DevOps Cloud Academy
Jul 12, 2020 · Cloud Native

Docker Quick Start Guide and Frontend Project Containerization

This tutorial provides a comprehensive Docker quick‑start for Linux, covering installation, essential commands, container lifecycle, image management, and step‑by‑step containerization of a frontend project with Dockerfile creation, image building, container deployment, registry push, and common troubleshooting FAQs.

DevOpsLinuxcontainerization
0 likes · 26 min read
Docker Quick Start Guide and Frontend Project Containerization
Liangxu Linux
Liangxu Linux
Jul 12, 2020 · Fundamentals

Why Page Faults Occur and How MMU & TLB Resolve Them

This article explains the concepts of virtual and physical addresses, lazy memory allocation, the roles of the MMU, page tables, and TLB in address translation, and details the causes, classifications, and handling mechanisms of page faults in Linux systems.

LinuxMMUPage Fault
0 likes · 12 min read
Why Page Faults Occur and How MMU & TLB Resolve Them
Liangxu Linux
Liangxu Linux
Jul 12, 2020 · Fundamentals

Can an 8 GB Raspberry Pi 4 Replace Your MacBook Pro for a Full Workday?

Jeff Geerling swapped his MacBook Pro for an 8 GB Raspberry Pi 4 for an entire workday, detailing the hardware setup, display tweaks, app replacements, audio/video recording challenges, and performance limits, then concluded whether the Pi can serve as a viable general‑purpose workstation.

FFmpegHardware EvaluationLinux
0 likes · 12 min read
Can an 8 GB Raspberry Pi 4 Replace Your MacBook Pro for a Full Workday?
Efficient Ops
Efficient Ops
Jul 7, 2020 · Operations

Mastering Linux Performance: From CPU to Flame Graphs

This article presents a comprehensive guide to Linux performance analysis, covering background, methodology, tools, and step‑by‑step case studies for CPU, memory, disk I/O, network, system load, and flame‑graph techniques to quickly locate and resolve bottlenecks.

CPU profilingLinuxflame graph
0 likes · 19 min read
Mastering Linux Performance: From CPU to Flame Graphs
dbaplus Community
dbaplus Community
Jul 6, 2020 · Databases

How to Enable IPv6 on Oracle 19c: A Step‑by‑Step Guide

This tutorial walks through verifying IPv6 support on Red Hat 7.6, configuring a static IPv6 address, updating the Oracle 19c listener for IPv6, restarting services, and confirming connectivity, providing concrete commands, configuration snippets, and screenshots for a RAC environment.

IPv6LinuxOracle
0 likes · 5 min read
How to Enable IPv6 on Oracle 19c: A Step‑by‑Step Guide
OPPO Kernel Craftsman
OPPO Kernel Craftsman
Jul 3, 2020 · Fundamentals

Overview of Linux Physical Memory Fragmentation and Management

Linux uses a buddy‑system allocator organized into nodes and zones to manage physical memory, distinguishing internal fragmentation (unused space within allocated blocks) from external fragmentation (insufficient contiguous free blocks), and mitigates the latter through memory compaction, the kcompactd daemon, and various allocation‑policy optimizations.

LinuxPhysical Fragmentationbuddy system
0 likes · 12 min read
Overview of Linux Physical Memory Fragmentation and Management
Open Source Linux
Open Source Linux
Jul 3, 2020 · Fundamentals

Unlock Linux Memory: From Basics to Advanced Allocation Strategies

This comprehensive guide explores Linux memory fundamentals, address space layout, fragmentation, buddy and slab allocation algorithms, kernel and user‑space memory pools, DMA handling, common pitfalls in C/C++ memory management, and practical commands for monitoring and debugging memory usage on Linux systems.

Allocation AlgorithmsKernelLinux
0 likes · 23 min read
Unlock Linux Memory: From Basics to Advanced Allocation Strategies
Liangxu Linux
Liangxu Linux
Jul 1, 2020 · Operations

Get Instant Linux Command Answers with the howdoi CLI Tool

This guide introduces howdoi, a lightweight command‑line utility that lets Linux users ask natural‑language questions and receive ready‑to‑run command snippets, covering installation, usage flags, and practical examples such as extracting files, managing cron jobs, and handling screen sessions.

CLILinuxautomation
0 likes · 7 min read
Get Instant Linux Command Answers with the howdoi CLI Tool
Open Source Linux
Open Source Linux
Jul 1, 2020 · Operations

Master Linux Process Management: Essential ps Command Techniques

This guide walks you through the Linux ps command, covering basic usage, common options for listing all processes, filtering by user, CPU or memory usage, process name, PID, threads, tree view, security details, root‑specific formatting, and real‑time monitoring with watch.

LinuxShellUnix
0 likes · 6 min read
Master Linux Process Management: Essential ps Command Techniques
Liangxu Linux
Liangxu Linux
Jun 30, 2020 · Operations

Why Deleting a Linux File Doesn’t Free Space – and How to Recover It

This guide shows how a file can appear deleted on Linux yet still occupy disk space, explains the inode reference‑count mechanism, demonstrates how to reproduce the issue with dd and a C program, and provides commands like lsof and /proc inspection to locate and release such hidden usage.

C ProgrammingFile SystemInode
0 likes · 6 min read
Why Deleting a Linux File Doesn’t Free Space – and How to Recover It
Liangxu Linux
Liangxu Linux
Jun 28, 2020 · Fundamentals

How to Customize Vim Colors and Themes: A Step‑by‑Step Guide

This guide explains what Vim color schemes are, shows how to view and switch built‑in schemes, demonstrates installing external themes from GitHub, and details how to make a chosen theme permanent, complete with example commands and recommended theme previews.

GitLinuxVim
0 likes · 5 min read
How to Customize Vim Colors and Themes: A Step‑by‑Step Guide
Top Architect
Top Architect
Jun 28, 2020 · Operations

Design and Implementation of a Log Collection Agent: Challenges and Solutions

This article explains the evolution of logging, the role of log‑collection agents, industry solutions, and step‑by‑step techniques for building a reliable push‑mode log collector on Linux, covering file discovery, offset management, file identification, update detection, and safe resource release.

Agent designFile MonitoringLinux
0 likes · 17 min read
Design and Implementation of a Log Collection Agent: Challenges and Solutions
DevOps Cloud Academy
DevOps Cloud Academy
Jun 27, 2020 · Operations

Linux Service and Process Management with Nginx

This guide explains how to install Nginx on a Linux server, manage it with systemctl commands, verify its operation using netstat, and control related processes via ps and kill utilities, providing practical command examples for each step.

LinuxProcess ManagementService
0 likes · 3 min read
Linux Service and Process Management with Nginx
DevOps Cloud Academy
DevOps Cloud Academy
Jun 27, 2020 · Operations

Configuring VNC Server and SSH Remote Access on Linux

This guide explains how to install and configure a VNC server on a Linux virtual machine, set a static IP, manage firewall and SELinux settings, and use SSH for remote command‑line access, including all necessary commands and client setup steps.

LinuxSSHVNC
0 likes · 4 min read
Configuring VNC Server and SSH Remote Access on Linux
Architects' Tech Alliance
Architects' Tech Alliance
Jun 26, 2020 · Cloud Computing

Open Source Operating System Business Models: Red Hat Case Study and Industry Analysis

This article examines the four open‑source operating‑system business models defined by the Linux Foundation, using Red Hat as a primary example, and analyzes its financial performance, product ecosystem, cloud‑native offerings, and the broader industry trend toward open‑source adoption by major IT giants.

LinuxRed Hatbusiness model
0 likes · 21 min read
Open Source Operating System Business Models: Red Hat Case Study and Industry Analysis
DevOps Cloud Academy
DevOps Cloud Academy
Jun 26, 2020 · Operations

Linux System User and Group Management Tutorial

This tutorial explains Linux user and group management, covering login prompts, user information commands, adding, modifying, and deleting users, switching users, password handling, file permission changes, and group administration with practical command examples and code snippets.

LinuxShell Commandsgroup-management
0 likes · 7 min read
Linux System User and Group Management Tutorial
DevOps Cloud Academy
DevOps Cloud Academy
Jun 26, 2020 · Fundamentals

Introduction to Linux Operating System – Basics and Common Distributions

This article provides a beginner-friendly overview of Linux, covering its definition, history, open‑source nature, key features, common distributions such as RedHat, CentOS, and Ubuntu, and related career paths and certifications, helping readers understand why Linux is essential for modern computing.

DistributionsLinuxfundamentals
0 likes · 5 min read
Introduction to Linux Operating System – Basics and Common Distributions
DevOps Cloud Academy
DevOps Cloud Academy
Jun 26, 2020 · Operations

Linux File and Directory Permission Management Tutorial

This tutorial explains Linux file and directory permission management, covering permission categories, how to view, add, revoke, and recursively apply permissions using commands such as ls, chmod, and demonstrates permission notation with examples.

Linuxchmodfile-permissions
0 likes · 3 min read
Linux File and Directory Permission Management Tutorial