THE UNKNOWN
Essays, notes, and practical guides for making sense of the world.
How to Secure Your Linux Server: A Comprehensive Guide
Securing a Linux server is critical for protecting sensitive data and maintaining the integrity and availability of your services. With the rise of cyber...
A Small HTTP Header Check with curl
Inspect the headers a real GET request receives, follow redirects deliberately, and keep response bodies out of the terminal.
Measure an HTTP Request with curl Without Guessing
Use curl write-out values to separate DNS, connection, TLS, first-byte, and total request time.
Memory Misadventures in C/C++: Unmasking Pitfalls and Sculpting Solutions
In the domain of C/C++ programming, the mantle of memory management falls squarely upon the developer's shoulders. This responsibility, although powerful,...
Exploring Data Structures in C++
Data structures are fundamental components in computer science, serving as the backbone for managing and organizing information efficiently. In C++, a language...
Understanding Algorithm Efficiency: Time and Space Complexity Explained
In algorithm design, we pursue the following two objectives: 1. Finding a Solution to the Problem: The algorithm must reliably find the correct solution to...
The Balcony Light Across the Street
A light across the street becomes an accidental clock until one quiet evening changes the view.
Exploring PostgreSQL Performance Tuning
PostgreSQL is a powerful and widely-used relational database management system known for its robustness, scalability, and extensibility. However, just like any...
The Hotel Wake-Up Call I Never Requested
A wake-up call arrives before sunrise for a flight, a meeting, and apparently a guest from a different decade.
The Day My Neighbor Borrowed Wi-Fi
A five-minute favor involving Wi-Fi grows into weather reports, printer support, and one unexpectedly formal thank-you gift.
Understanding PostgreSQL for Beginners
PostgreSQL is an open-source relational database management system (RDBMS) that has gained popularity for its powerful features, flexibility, and support for...
A Gentle First Pass With journalctl
Start with a narrow journalctl query and widen it deliberately instead of scrolling through the entire system journal.