Repairing a broken system, breathing life into an old one, or powerful utilities—Linux is unparalleled in these domains.

Hello! I'm Yuki-kun, an aspiring engineer by day and a fighter against charts by night. Recently, I've been challenging myself with LPIC Level 1 to master Linux, the cornerstone of IT infrastructure.

Hi there! I'm Yuki-kun, and I recently started on X (formerly Twitter). While earning a little extra pocket money through investing, I find my purpose in life by completing certification exams. Today, ...

Researchers found a way to bypass recent mitigations for Spectre v2 speculative execution side-channel attacks and developed ...

A nine-year-old race condition vulnerability in the Linux kernel's XFS filesystem, tracked as CVE-2026-64600, allows local attackers to overwrite protected files and gain root privileges.

I've used Linux for 30 years, and this free security suite does it all - almost perfectly ...

What this course is A study-and-practice track built as an Obsidian knowledge base. Each module is a folder with its own Readme hub and a set of deep-dive notes containing tagged, copy-ready command ...