karpathy

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.

hekmon

Simply include the file within your configuration.yaml file like this:

# ...
input_number: !include input_numbers.yaml
# ...

Restart your Home Assistant to update the values (reloading YAML will not be enough).

KidA001

UPS Shutdown Scripts

This documents everything I needed to get my Proxmox instance to listen to my UPS Server and initiate a shutdown script that would shutdown my UDM Pro. This is needed as the UDM Pro does not have the ability to listen to a NUT server on it's own (what the hell ubiquiti).

I'm using a Synology NAS as a NUT server, but you can point your NUT client to any supported UPS. It's set to alert any clients subscribed to it when the UPS connected to it is in low battery. This all applies regardless of what machine you have a NUT server on, it does not have to be Synology.

Additionally these install steps were on my Proxmox machine, but these steps will probably work on any Debian GNU/Linux OS with little to no modification. YMMV

High level summary of the steps:

• Install the NUT client on Proxmox

zakariaf

Rails 7 new features. Before and After

• Add ComparisonValidator
• PostgreSQL generated columns
• PostgreSQL custom enum types
• Add tracking of belongs_to association
• association_previously_changed? method
• Add invert_where method
• Add associated method
• Add missing method
• Active Record Encryption

julienma

The dokku-push action requires an SSH key with push access to the Dokku instance. Here's how to do that.

Replace APPNAME with the name of the app (e.g. this is a good idea to use the same name used on Dokku's).

Generate a new SSH keypair

We want each repo to have its own SSH key, so it's easier to rotate/invalidate them if required, without affecting all the repos. Let's generate a new key on your computer (see GitHub help):

dhh

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers

charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

julienma

-- Script for DEVONthink 3
-- Run OCRmyPDF on PDFs without OCR
-- Requires https://github.com/jbarlow83/OCRmyPDF to be installed e.g. with brew

on performSmartRule(theRecords)
	tell application id "DNtp"
		set strExportPath to "PATH=/opt/homebrew/bin:$PATH "
		set intRecordsCount to count of theRecords
		show progress indicator "Adding OCR to PDF..." steps intRecordsCount
		repeat with theRecord in theRecords

julienma

Sinatra & Web Development Cheat Sheet

This is a cheat sheet I developed for students while teaching an Intro to Web Development course through Lighthouse Labs. If you're interested in learning to code, you should definitely check them out.

Table of Contents

1. HTML
   • Basic page structure
   • Formatting tags

• Content tags

systemed

(Dijkstra and plain A* are generally not included here as there are thousands of 
implementations, though I've made an exception for rare Ruby and Crystal versions,
and for Thor, Mapzen's enhanced A*. )

A*                                      Ruby    https://github.com/georgian-se/shortest-path
A*                                      Crystal https://github.com/petoem/a-star.cr
A* (bidirectional with shortcuts)       C++     https://github.com/valhalla/valhalla
NBA*                                    JS      https://github.com/anvaka/ngraph.path
NBA*                                    Java    https://github.com/coderodde/GraphSearchPal
NBA*                                    Java    https://github.com/coderodde/FunkyPathfinding