12 posts
A personal blog that started in the grassroots webmaster era of 2012 survived tightening regulation, the app wave and the collapse of search traffic — and finally lost its reason to exist in the age of AI.
With open source LLMs and the tools the community keeps shipping, AI is finally within everyone's reach. Plenty of people can now run large models on a local laptop — but laptops are underpowered, and they have other work to do; you can't keep a model running on them around the clock. I prefer PVE, so here's my deployment walkthrough, a guide for my future re-deploys.
We're always setting permissions on folders and files in Linux with chmod 777. Those 777 digits are the permissions — just three numbers expressing three kinds of permission for three kinds of role. Let's break them down one by one.
A follow-up to my last post, "Post-Mortem: Redis on 6379 Got Hacked, Turned into a Replica and Used to Mine Monero". This one analyzes the attacker's script and reproduces how they exploited unauthorized Redis access to get a shell and mine crypto.
We use Redis at work to cache and speed up static content. Since it was a dev environment I just spun up a Redis image in Docker and skipped setting a password, figuring iptables would keep me safe. Recently it started misbehaving.
MariaDB/MySQL is case-sensitive on Linux, so any mismatch in capitalization between your table or column names and your SQL throws errors. That's why we usually turn case sensitivity off first.
Exited just means the container has stopped. The argument is always about the number that follows — 125, 126, 127, 128, 130, 137, 143. Here's where those numbers actually come from.
Many students often use the kill command to kill processes in daily Linux use. Some use kill directly, some use kill -9, some use kill -3. What do they mean and what's the difference? Today we'll learn about the kill command and signals in Linux.
Every day we code we face interrupted trains of thought, or pick up today where we left off yesterday. With nothing recorded, we may forget what's left to do, and even lose the solution we had in mind.
After the computer gets the domain name the user typed in, it queries a server — the DNS server set in our computer. DNS stands for Domain Name System, and every ISP provides a DNS server for users to resolve domain names. This article doesn't cover DNS principles, only the resolution process, so let's go straight to it.
