Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Who I Am
- Software developer, heavily interested in performance and optimization and systems engineering.
- I also specialize in Linux and other operating systems.
About CRNX.net
- This is my personal site and I use it to write about technology topics, from programming and system engineering topics, to also different useful tech tools.
- Nonetheless, this site isn’t only about tech, but also about my main interests: plants, gardening and hydroponics, as well as my other hobbies.
- In CRNX you’ll also find information about my different projects, from climate controlled preservation rooms to categorization systems and advanced hydroponics.
Latest Posts
Using /dev/ Device Files in Linux to Copy, Mirror and Backup Your Data
January 28, 2025
How to use device files in /dev/ for common disk-related tasks, including disk copying, backups, and mirroring, using tools like dd, cat, and others. It also highlights best practices and precautions to ensure data integrity.
How Everything is a File in Linux and Unix Systems
January 25, 2025
This article explores and explains the “everything is a file” philosophy and implementation, discussing its implications, practical examples, and the benefits it brings to the Linux and Unix ecosystems.
An Introduction to the Linux Kernel, its Architecture, Subsystems and Features
January 24, 2025
This article explores the technical architecture, features, and functionalities of the Linux kernel, highlighting its components and the mechanisms that make it a powerful and versatile piece of software.
The History and Evolution of the Linux Kernel
January 23, 2025
From a personal hobby project to a cornerstone of modern computing, the Linux kernel’s journey is a testament to the power of open-source collaboration and innovation. Its flexibility, performance, and community-driven development have ensured its relevance across decades.
Command Substitution in Bash
January 21, 2025
This guide and cheat sheet will help your understand command substitution in Bash (and other shells). Be it in the command line or in a script, with command substitution you’ll be able to combine commands and their outputs in a very powerful way.
Debugging and Troubleshooting Your Bash Scripts
January 21, 2025
This guide and cheat sheet, explores various techniques and tools for troubleshooting and debugging your Bash scripts. We’ll cover both built-in approaches (like set options and trap) and external resources (shellcheck, logs) to help you quickly identify and fix issues.
Advanced Bash Scripting Guide, Cheat Sheet and Use Cases
January 21, 2025
This Advanced Bash scripting guide and cheat sheet covers from advanced parameter expansion techniques, process substitution and signal handling to namerefs and indirection, advanced argument parsing, I/O redirection and even parallelization. Take bash scripting to the next level.
Bash scripting guide and cheat sheet
January 20, 2025
While there are many tutorials about Bash scripting on the Internet, this one focuses on presenting the information in a cheat sheet style, so you can jump right into coding without wasting your time. From the very beginning to intermediate and advanced topics.
The Ultimate cURL Guide and Cheat Sheet
January 19, 2025
cURL excels in transferring data between systems or services, especially for API interactions, testing endpoints, and sending or receiving files in custom ways. Its flexibility, combined with support for various protocols and authentication methods, makes it an essential tool in any developer or sysadmin’s toolkit.
Wget Advanced Examples and Use Cases
January 19, 2025
From handling cookies and session data to manage SSL certificates, connect to to proxies and using custom headers. These are some of the most advanced Wget use cases.
The Ultimate Wget Guide and Cheat Sheet
January 19, 2025
This cheat sheet covers the majority of daily use cases for Wget. Whether you’re scripting a bulk download, mirroring a site, or retrieving files over HTTP(S) or FTP, these commands should help you handle most scenarios efficiently.
The System V to-the-point guide and cheat sheet
January 18, 2025
System V is the classic Linux init system, this article is a to-the-point guide and cheatsheet intended to help you quick access to all System V commands, directories and tools.
The systemd to-the-point guide and cheat sheet
January 18, 2025
Systemd is currently the fastest growing Linux and widely adopted service manager and init system. This part guide, part cheatsheet will give you all the commands in a neatly organized fashion so you can master it and become a proficient Linux power user.
Mega-Tags, an advanced semantic and contextual content tagging system
January 18, 2025
A content-tagging system which allows adding semantically and contextually rich tags.
How to Compile Packages in Linux and its Advantages
January 17, 2025
Compiling source code in Linux is an easy task. In this tutorial you’ll learn how to get your system ready and the three steps needed to compile packages.
