I started teaching Git back when the porcelain was thin and most workflows required you to understand what was happening underneath. Over the years the material grew into something close to a full curriculum: fundamentals, branching and merging, rebasing, hooks, submodules, subtrees, LFS. Around 300 pages total. I no longer run these trainings myself, but the content is still in use in professional settings. Releasing it under an open license seems like the right call at this point....

Background: when you’re subscribed to multiple mailing lists like the Linux Kernel Mailing List (lkml), bpf, dwarves, io-uring, linux-embedded, and others, the daily flood of emails makes it impossible to read everything in detail. Still, I want to keep up with ongoing development. That’s why I built a ChatGPT Summary Generator that integrates nicely with my OfflineIMAP–NeoMutt–Notmuch setup. Sorry for the clickbait — it’s just an email-to-ChatGPT fan-out. No proprietary Google/Microsoft stuff involved....

This blog-post demostrate how Intel Processor Trace (PT) can be usable for everyday reverse-engineering and debugging tasks by showing exactly how to capture and decode real execution, not just what the program could do in theory. PT is powerful and surprisingly underused; once you see how to drive it with perf, it becomes a reliable way to cut through indirection, obfuscation, and environment-dependent behavior. Agenda We start with core notions of control-flow analysis, move to what Intel PT actually records, then work through a practical perf workflow, deal with common pitfalls, and close with limits and an appendix on correlating addresses under ASLR....

Banana Pi F3 Christmas project: I got a Banana Pi F3 on the cheap and used the quiet hours to power it up, take inventory, and write a technical first look. This post is deliberately terse and focused on what matters to Linux developers and performance engineers. TL;DR: Octa-core 64-bit RISC-V with RVV 1.0 (256-bit), two coherent clusters, sensible caches, usable PCIe and I/O. Treat the GPU and video items as hardware capability; the Linux userspace stacks may lag....

tl;dr: for 25 years standard vim user, without plugins. Since two years questioned bad habits and analyzed repetitive pattern and switched to neovim with certain plugin set. Here I describe which plugins I use and why. Before I go into detail, I would like to explain my working practices in this section. This is important because my setup is tailored to my environment and may be completely different for you. Admittedly, I don’t get to do much programming....

After a period of inactivity (~11 years now, with the exception of 2 posts, 7 years ago) in managing my website, it became clear that an upgrade to my web infrastructure was essential. Due to outdated scripts and other technical challenges, I’ve opted for a comprehensive overhaul of my web hosting solutions. Consequently, I am transitioning from Jekyll and Google Hosting to adopting Hugo, in combination with Cloudflare, for a more robust and updated online presence....