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Linux Tech Enthusiast

Focused on sharing practical Linux technology content, covering Linux fundamentals, applications, tools, as well as databases, operating systems, network security, and other technical knowledge.

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Latest from Linux Tech Enthusiast

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Linux Tech Enthusiast

Mar 1, 2026 · Fundamentals

14 Git Commands You’ll Use 99% of the Time

This guide lists the 14 Git commands that cover 99% of everyday development tasks, explains each command’s purpose, provides example usage such as initializing a repository, cloning, adding, committing, pushing, pulling, branching, merging, checking status, rebasing, stashing, and reverting, and even shows a simple shell script for summarizing repository information.

Version Controlshell scriptsoftware development

0 likes · 8 min read

14 Git Commands You’ll Use 99% of the Time

Linux Tech Enthusiast

Feb 28, 2026 · Fundamentals

GET vs POST: What’s the Real Difference in HTTP?

This article explains the fundamental differences between HTTP GET and POST methods, covering their request line structure, header and body handling, safety and idempotence properties, caching behavior, length limits, TCP packet usage, and how HTTP distinguishes them for resource management.

HTTPPOSTget

0 likes · 10 min read

GET vs POST: What’s the Real Difference in HTTP?

Linux Tech Enthusiast

Feb 27, 2026 · Information Security

Why HTTPS Is Secure: From HTTP Vulnerabilities to TLS and CA Trust

HTTPS secures web communication by replacing plaintext HTTP with TLS encryption, using asymmetric key exchange to protect symmetric keys, and relying on a hierarchical CA certificate chain to verify server identities, thereby preventing man‑in‑the‑middle attacks that exploit HTTP’s unencrypted traffic.

AESCertificate AuthorityHTTPS

0 likes · 10 min read

Why HTTPS Is Secure: From HTTP Vulnerabilities to TLS and CA Trust

Linux Tech Enthusiast

Feb 26, 2026 · Operations

A Comprehensive Guide to Linux Performance Optimization

This article walks through Linux performance optimization by explaining core metrics such as throughput and latency, describing how to interpret average load, CPU usage, context switches, memory management, and swap, and showing step‑by‑step usage of tools like vmstat, pidstat, perf, and dstat with concrete command examples and analysis cases.

CPULinuxMemory

0 likes · 37 min read

A Comprehensive Guide to Linux Performance Optimization

Linux Tech Enthusiast

Feb 25, 2026 · Fundamentals

How Linux File Systems and Disk I/O Work

The article explains Linux's core storage components—inode, dentry, superblock, and logical blocks—how the Virtual File System abstracts different file systems, the classification of file systems and I/O types, disk technologies, the block layer, I/O schedulers, and practical performance metrics and monitoring tools.

I/O schedulerLinuxdisk I/O

0 likes · 20 min read

How Linux File Systems and Disk I/O Work

Linux Tech Enthusiast

Feb 24, 2026 · Fundamentals

Understanding the TCP Communication Protocol: Features, Handshakes, and Optimizations

This article explains TCP as a connection‑oriented, reliable byte‑stream transport protocol, detailing its header fields, state machine, three‑way handshake, four‑way termination, TIME_WAIT handling, Linux inspection commands, optimization techniques, and a comparison with UDP, all illustrated with concrete examples and diagrams.

LinuxNetwork ProtocolSocket

0 likes · 27 min read

Understanding the TCP Communication Protocol: Features, Handshakes, and Optimizations

Linux Tech Enthusiast

Feb 23, 2026 · Information Security

What Programming Languages Do Hackers Prefer? Survey and Exploit-DB Analysis

A 2021 CCC member survey and a large‑scale analysis of Exploit‑DB reveal that hackers predominantly use Shell scripts and Python, with notable overlap across both data sets, while language preferences shift over time toward Python and away from C, highlighting detection challenges and future trends.

Information SecurityPythonSecurity Research

0 likes · 11 min read

What Programming Languages Do Hackers Prefer? Survey and Exploit-DB Analysis

Linux Tech Enthusiast

Feb 21, 2026 · Fundamentals

What Happens After You Type a URL? A Step‑by‑Step Animation

When you enter a URL, the browser checks multiple caches for the IP, performs recursive DNS lookup if needed, establishes a TCP connection and HTTPS handshake, sends an HTTP request, receives a 200 response, and then parses HTML, CSS, and JavaScript to build and render the page.

Browser RenderingDNSHTTPS

0 likes · 4 min read

What Happens After You Type a URL? A Step‑by‑Step Animation

Linux Tech Enthusiast

Feb 20, 2026 · Fundamentals

How Routers Work: From Routing Tables to Dynamic Path Selection

Routers, also known as gateways, connect separate networks by using routing tables to determine the optimal path for packets, employing direct, static, and dynamic routes, following longest‑match and cost metrics, and handling three‑layer IP addressing to forward data across diverse subnets.

Dynamic RoutingIP addressingRouter

0 likes · 7 min read

How Routers Work: From Routing Tables to Dynamic Path Selection

Linux Tech Enthusiast

Feb 19, 2026 · Operations

600 Essential Linux Commands A‑Z: Complete Cheat Sheet

A comprehensive A‑Z reference of over 600 common Linux commands, each with a brief description of its function and typical usage, providing a handy quick‑lookup guide for system administrators, developers, and anyone working with the Linux command line.

BashLinux commandsShell

0 likes · 21 min read

600 Essential Linux Commands A‑Z: Complete Cheat Sheet