Extract files from proxmox vm stored on zfs pool

Rough notes on how I recovered some files from a zfs mirror; from a nixos machine that did not already have zfs installed - from inside a .raw image, from a docker container, from inside a proxmox backup, from two drives in a zfs mirror.

Let’s Encrypt certificates on an OpenWrt router

A quick setup guide for automatically renewing, valid certificates for your own domain on your OpenWrt router's admin page.

Show environment variables of a process

Use ps -E to list the environment variables of a process.

Use a bash variable where a file is needed

With bash you can use a variable with newline separated content where a file is needed. Or rather, pass your content as an _unnamed pipe_.

Roll your own jwt.io in the terminal

Pasting a jwt token into someone else's website feels wrong. Let's roll a small diy version of it in the terminal.

Nix-darwin Sequoia nixbld users migration

Nix-darwin needed to move its builder users to work with macos Sequoia.

Connecting Stable Diffusion WebUI to your locally running Open WebUI

Connecting Stable Diffusion WebUI to Ollama and Open WebUI, so your locally running LLM can generate images as well! All in rootless docker.

Colima: Don’t keep docker credentials in the clear

I don't enjoy configuration files with secrets kept in plaintext. Here's how to move docker credentials to the macos keychain when you are running colima.

Running LLMs locally with Ollama and open-webui

Enjoying LLMs but don't care for giving away all your data? Here's how to run your own little chatgpt locally, using ollama and open-webui in docker!

Qemu: Mouse cursor offset

For the longest time I have been troubled by a mouse cursor offset when running Windows in a VM with qemu. The -usbdevice tablet option fixes it.

Nix can launch developer environments

Nix can launch developer environments with all the programs your build or project needs, readily available on the path. With nescessary environment variables set and custom scripts at your fingertips.

Nix can be daunting

Nix can be daunting at first, as many parts of it really differs from other languages. But you don't really need to know that much of nix the language to simply install some software and manage a little configuration.

Bash : and [ are shell commands

The obscure workings of bash never cease to amaze me. The commands : and [ are two bash commands I never knew was runnable on their own.

Nix can set up macos!

Like NixOS can setup your linux distribution, nix-darwin can setup your macos installation!

Nix can set up your whole operating system

I installed NixOS on my personal computer. Here are some thoughts, three months in.

Series: Nix can

My journey with Nix continues, and I discover so many new bits and pieces about its workings. Here's a little series of posts in an attempt to document some of it along the way.

Join lines of output with commas

Sometimes you have multiple values separated by spaces, but you need them on a single line, separated by commas.

Zsh history across sessions

You can customize when zsh persists and reads its history using the options share_history, append_history and inc_append_history.

Proxmox in the homelab

Installing Proxmox on some old hardware at home or in a homelab is a great way to virtualize some of the services you need to run at home.

Macos speech synthesis

Playing around with ChatGPT text-to-speech in emacs, I discovered that the macos `say` command can do a lot more than I knew about.

More good stuff about Nix: NixOS modules

Tailscale developer Xe Iaso shows how to deploy a Go program as a NixOS service.

Rotate a webp image with imagemagick

My previous HEIC to webp conversion sometimes messes up the rotation. Here's how to fix it using imagemagick.

Jpeg, png and heic to webp

WebP offers a compelling combination of features for images on the web; small image sizes, high image quality with both transparency and animation support. Convert to webp on macos.

Stuff I had no idea systemd could do

Hugo page bundle file name permalinks

Hugo bundles need file name set to index for post permalinks to work.

OPSer of the week

Every week we assign one person to monitor and keep on top of our team's running data pipelines, applications and services. This was getting tedious, so we automated it.

Alfred workflows with a single shell script

There are so many great Alfred workflows! I use a lot of them every day. One gripe I have with a few of them is that they bundle some kind of unsigned binary that I cannot look at or vet. This post investigates how you can roll your own Alfred workflow with a single, standalone shell script.

PWM fan on Raspberry Pi 4

SMB1 for Sonos Controller 1 to discover music library

Automounting smb network drives with systemd

Mounting a smb share under linux

Drop all lines until

Creating, listing and extracting a tar.gz archive

Continue a download with wget

When you started a download with `wget`, but you don't have time for it to complete.

Upgrading OpenWrt with auc on the Routerstation Pro

Format a FAT memory stick on Linux without dependencies

This is something I always forget, so here are the notes.

Running a command as another user

ZSH autoloads to lazy load slow init scripts

Some scripts that need to be initialized when your terminal starts take a long time - too long to run them on every shell you spawn.

Org mode as a writing platform

git log –first-parent

Shell scripts in parallel

The other day we tried to controllably DDOS a colleague's web server using a shell script. Like every time I dig into the quicks of bash I learn something new.

Useful terminal shortcuts

Useful default terminal shortcuts I can't live without.

Downgrade a homebrew package to a version no longer installable

Create you own local tap repository, extract an old formula and install it with brew.

Chat gpt as my Home assistant assistant

Cut is useful

Unexpected bash variable expansion

Bash variables are expanded before your command runs. Beware if you set them in front of your commands.

1Password cli examples

Read 1Password secrets from the command line, load them into environment variables and config files.

Hugo, GitHub Pages and Let’s Encrypt

A GitHub Pages Hugo site on https with a Let's Encrypt certificate