rmtsrc

Install

Fixes issue with Goodix fingerprint reader when a fingerprint has already been enrolled in the BIOS, but then the OS has been removed (without un-enrolling the fingerprint first). I.e. fprintd device reported an error during enrol: Finger is too similar to another, try use a different finger

sudo pamac install base-devel meson gobject-introspection gtk-doc

git clone https://gitlab.freedesktop.org/libfprint/libfprint.git

cd libfprint

rmtsrc

Using cec-client on a Raspberry Pi

Most modern HDMI connected devices support Consumer Electronics Control (CEC). It allows devices to send commands to each other, typically to get the TV to switch input and control volume. If you have ever turned on a Game Console and had your TV automatically change input to that device you have seen CEC in action. It is very convenient and useful, sort of a universal remote that works.

Every manufacturer seems to have it’s own branding of CEC (e.g. Samsung Anynet+, LG SimpLink, Sharp Aquos Link) but it may need to be enabled. Check your manual for details.

Using a Raspberry Pi connected to a TV that supports CEC, you can use the command line cec-client application to control the inputs and the TV itself. These are notes on how to use cec-client and understand the different options.

Details

rmtsrc

Tingbot display revival

1. Download & install the Raspberry Pi Imager

2. Choose Device: Raspberry Pi 3

3. Choose OS: Raspberry Pi OS (other) > Raspberry Pi OS Lite (Legacy, 64-bit)

4. Click Next then Edit Settings and set Username/Password or SSH key

rmtsrc

Shared Windows/WSL SSH/GPG key agents

By default, SSH and GPG key agents are not shared between Windows and WSL.

This means that by default if your SSH/GPG keys are encrypted with a password, you will be prompted for them each time unless you add them a key agent on both Windows and WSL.

Using win-gpg-agent allows you to add your SSH and GPG keys to the agent and also allows you to save your password, so that you don't need to enter it each time for each platform or after a restart. While keeping it secured via password encryption on disk and protected by your Windows account.

Disable Windows ssh-agent (if enabled)

rmtsrc

PostgreSQL JSON Cheatsheet

Using JSON in Postgres by example.

Quick setup via Docker

1. Download and install: Docker Toolbox
2. Open Docker Quickstart Terminal
3. Start a new postgres container:
   docker run --name my-postgres -e POSTGRES_PASSWORD=mysecretpassword -d postgres

rmtsrc

Subnet Cheat Sheet

CIDR	Subnet mask	Wildcard mask	# of IP addresses	# of usable IP addresses
/32	255.255.255.255	0.0.0.0	1	1
/31	255.255.255.254	0.0.0.1	2	2*
/30	255.255.255.252	0.0.0.3	4	2
/29	255.255.255.248	0.0.0.7	8	6
/28	255.255.255.240	0.0.0.15	16	14
/27	255.255.255.224	0.0.0.31	32	30

rmtsrc

#!/usr/bin/env python

# https://github.com/HarlemSquirrel/scripts/blob/master/rpi-check-throttling.py

# https://blog.mccormack.tech/shell/2019/01/05/monitoring-raspberry-pi-power-and-thermal-issues.html
# https://github.com/raspberrypi/firmware/commit/404dfef3b364b4533f70659eafdcefa3b68cd7ae#commitcomment-31620480
# 1110000000000000010
# |||             |||_ under-voltage
# |||             ||_ currently throttled
# |||             |_ arm frequency capped

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const chromeLauncher = require('chrome-launcher');
const CDP = require('chrome-remote-interface');
const sleep = require('sleep-async');

// Optional: set logging level of launcher to see its output.
// Install it using: yarn add lighthouse-logger
// const log = require('lighthouse-logger');
// log.setLevel('info');

/**

rmtsrc

# set the base image to Debian
# https://hub.docker.com/_/debian/
FROM debian:latest

# use bash so we can source files
SHELL ["/bin/bash", "-c"]

# update the repository sources list
# and install dependencies
RUN apt-get update \

rmtsrc

# Requires `git filter-repo` https://github.com/newren/git-filter-repo

mkdir tmp && cd tmp

export USERNAME="github-username"
export TOKEN="github-token-with-repo-access"

curl -u "$USERNAME:$TOKEN" "https://api.github.com/search/repositories?q=user:$USERNAME" |
  grep -e 'ssh_url*' |
  cut -d \" -f 4 |