How-To Archives - cialu.net

An Introduction to the Linux Operating System

April 25, 2026 cialu Technology

The Linux operating system represents one of the most significant technological achievements in modern computing. From powering enterprise-grade servers to running embedded systems and smartphones, Linux has become a cornerstone of digital infrastructure. Unlike proprietary operating systems, Linux is open-source, meaning its source code is freely available, modifiable, and distributable. This openness has fostered a global ecosystem of developers, organizations,[…]

How to Transfer EPUBs from Apple Books to Calibre

January 14, 2026 cialu Technology

Apple Books (formerly iBooks) exports personal EPUBs as folders containing loose files and unwanted metadata like iTunesMetadata.plist, which Calibre can’t import directly. Cleaning these into standard ZIP-based EPUBs allows seamless transfer to Calibre for management and conversion. This guide covers extraction, batch cleaning via terminal (with the provided script), and platform-specific solutions for Linux, macOS, and Windows. Extracting EPUB Folders[…]

Protect Yourself from Money Muling!

November 5, 2025 cialu Money

In today’s increasingly digitized financial landscape, threats once considered fringe are now mainstream — among them the phenomenon of money muling. While the term may not be familiar to everyone, its consequences can be profound: loss of personal assets, damage to credit history, reputational harm, and even criminal prosecution. In this article we’ll unpack: what a “mule account” is; how[…]

Where’s My Disk Space? A Complete Guide to Freeing Storage on Your Mac

October 3, 2025 cialu Technology

If you’ve just bought a brand new Mac and you’re already seeing the dreaded “Your disk is almost full” warning, you’re not alone. Storage issues are one of the most common complaints among Mac users, whether they’re working on a 128 GB MacBook Air or a high-end Mac Studio with multiple terabytes of SSD storage. The frustration often boils down[…]

Support and Resistance Levels – Core Concepts in Market Trading

August 13, 2025 cialu Money

In the dynamic world of trading, understanding market movements is an indispensable skill. At the heart of technical analysis are support and resistance levels, fundamental concepts that both novice and expert traders rely on. These levels represent significant price points where the forces of supply and demand clash in ways that can change the direction of asset prices. Understanding what[…]