mafredri

# This setup works pretty well for OPL with a network link that travels through
# two UniFi switches and connects to a Samba server running inside Docker. The
# host OS is Debian with a ZFS filesystem and the container OS is also Debian.
# Latest Samba (4.11+).

[global]
# ======================
# General Samba settings
# ======================
log level = 1

mafredri

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

mafredri

# /etc/cron.d/samba-timemachine-zfs-snapshot

# Create snapshots after completed Time Machine backups.
# Runs every two minutes to allow creating backups only after cleanup is
# completed.
*/2 * * * * root /usr/local/bin/timemachine-zfs-snapshot.sh rpool/share/timemachine

mafredri

# Creates remarkable_backup-(date).tar.gz with todays date, backs up /home/root.
(
	ssh root@10.11.99.1 'tar cf - .' \
	| gzip >remarkable_backup-$(date '+%Y-%m-%d').tar.gz
) 2 >err.log
cat err.log

mafredri

# This is a custom tabulation command implemented fully in zsh that
# produces simple output suitable for zsh-histdb.
#
# The `column` command on macOS has a silly limitation max 2048 line
# length, it's unsuitable for tabulating long paths and commands. It
# also produces somewhat unexpected results with regards to column
# length and placement.
#
# Features:
# - Right indent for number columns

mafredri

FROM alpine:3.14.2
LABEL maintainer="Mathias Fredriksson <mafredri@gmail.com>"

RUN apk add --no-cache \
	bzip2 \
	ca-certificates

ARG RESTIC_VERSION='0.12.1'
RUN wget -O - https://github.com/restic/restic/releases/download/v${RESTIC_VERSION}/restic_${RESTIC_VERSION}_linux_amd64.bz2 \
	| bzip2 -d >/usr/local/bin/restic \

mafredri

#!/bin/bash
# brew-go-get
# Original: https://blog.filippo.io/cleaning-up-my-gopath-with-homebrew/

set -euo pipefail

name_to_repo() {
	local name="$1"
	name="${name/go-get-}"
	echo "${name//--//}"

mafredri

#!/usr/bin/env expect -f

# Description: Expect script to automate WireGuard upgrade on UniFi Security Gateway
# Author: Mathias Fredriksson <mafredri@gmail.com>

# This script assumes non-interactive ssh login.
# Usage upgrade.expect <[user@]usg> <https://github.com/Lochnair/vyatta-wireguard/releases/download/${RELEASE}/wireguard-${BOARD}-${RELEASE}.deb>

set timeout 60

mafredri

Setting up custom SSH keys for UniFi hardware

1. Create config.gateway.json to configure USG
2. Create config.properties to configure switch / AP / etc...
3. Place config.gateway.json and config.properties in data/sites/default
4. Restart controller (maybe?)
5. Reprovision all devices

Resources

mafredri

// This example gives permission to access geolocation
// and fetches the current position via JavaScript.
// Tested on: cdp v0.18.7 and Chrome Canary 70.0.3532.0,
// and seems to work in both headless and headfull mode.
package main

import (
	"context"
	"fmt"
	"log"