Dev
Technology, development, hardware, and experiments.
[Linux] Recovering a disconnected `apt dist-upgrade` session
Today I was updating my Proxmox install remotely via the built-in console, but forgot what I was doing and closed the tab mid-way. This resulted in me being unable to connect again as the packages were already being updated in the background and the upgrade has asked a question to replace a file and waiting
[Linux] Syncthing – read-only file system when running as service
I’ve been using Syncthing for a while to synchronize my working copy with a local dev server for a few months. At first I was using it by logging in and running it manually through the CLI. It was working well, so I didn’t think twice when I moved to run it as a service.
[Linux] Running multiple commands on multiple servers in parallel
I have a cluster of Raspberry Pi’s at home running Docker Swarm. To keep up with things, they’re using the same configuration – users, Docker versions, etc. Sometimes some of the updates require running the same thing on all the nodes of the cluster – for example – creating a new Docker macvlan network. To
Guessing a numeric zip file password only with command-line utilities
Today I received my monthly invoice from my internet provider and something struck me as weird. The invoice, contained in the mail was in a ZIP file with a password. Not to say how strange it was to receive an attachment as a ZIP file in these days and times (spam, malware, phishing, etc.), the
Dealing with spaghetti code in PHP: Using anonymous functions to extract pieces of template code
Recently I’ve been helping out a friend with trying to make sense of some code and how to modify it to work well with asynchronous calls to the backend. A bonus would be to be able to write it in a more modular and reusable way. The code is a WordPress plugin that was written
Arduino/ESP32: Disabling the task watchdog
Recently I’ve been playing around with ESP32’s multicore functionality and task pinning to specific cores. I was using AutoConnect to support WiFi connection without storing credentials in the code and provide OTA updates via the web UI. This was for a project that was going to control some CPU 4-pin PWM fans that are in
Setting up a YubiKey for Git commit signing
I’ve been using a YubiKey as a 2-Factor Authentication key and to sign my Git commits. Until a few days ago I’ve been using a YubiKey 4. Since my current computer doesn’t have any USB-A ports, I’ve been juggling a USB-A-to-USB-C adapters in my backpack and using the key has been a hassle for the
e1000e eth0: Detected Hardware Unit Hang
Recently my home server and VM host randomly started losing network connectivity. On the outside it seems that it was still working, but I was unable to access it in any remote way. The ethernet adapter seemed to be on, according to the switch, so the issue must have been somewhere in software. It wouldn’t
Snippets: Running a local/private swarm Docker image registry
Today I was trying to generate a Docker image from a Node.js project and I wanted to deploy it on my local test swarm. Unfortunately if one builds a local Docker image, this image is stored and accessible only to the node it was created on and the other swarm nodes can’t access it. The
Snippets: Map Apple Keyboard Section sign key to back quote ( § to ` )
I’ve been using the Apple keyboards for a while, but when you live in Europe it’s not easy to source the US layout ones that I’m used to. On macOS there’s an “easy” way to remap the keyboard with just a terminal command: watch -n1 -x hidutil property -m ‘{“ProductID”:592, “VendorID”:1452}’ –set ‘{“UserKeyMapping”:[{“HIDKeyboardModifierMappingSrc”:0x700000035,”HIDKeyboardModifierMappingDst”:0x700000064}]}’ What this
Resetting/Restarting Apple TV remote
Last night during a guest visit, I managed to submerge our Apple TV remote under water. Lack of sleep and unstable glasses result in accidents. The remote was working well last night, but today it stopped working. Not responding to any actions. I tried bashing it in my hand, shaking water out of it. It