Roberto Salas robsalasco

Following this guide: https://wiki.mobileread.com/wiki/Kindle4NTHacking#SSH.
Using Kindle 4.1 and macOS 10.14.

Jailbreak

Connect the Kindle. It should be recognized as a USB Mass Storage Device.
Download the jailbreak archive
Copy data.tar.gz, ENABLE_DIAGS, and diagnostic_logs to the Kindle folder.
Restart the Kindle into Diagnostics Mode.
Reboot the Kindle from the Diagnostics Mode. Reboot screen should show jailbroken screensaver.

Old machine

Backup alfred preferences: cp '/Users/matt/Library/Application Support/Alfred/Alfred.alfredpreferences/preferences/features/websearch/prefs.plist' config:/alfred/websearch-prefs.plist
Backup iterm preferences (Profile, keymap, colors)
TODO roll all this into a script

SSH

$ brew install liblwgeom
$ export LDFLAGS="-L/usr/local/opt/liblwgeom/lib"
$ export CPPFLAGS="-I/usr/local/opt/liblwgeom/include"
$ brew edit libspatialite
(add --enable-lwgeom to configure)
$ brew reinstall -s libspatialite
$ brew install -s gdal

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

Using websockets to easily build GUIs for Python programs

I recently built a small agent-based model using Python and wanted to visualize the model in action. But as much as Python is an ideal tool for scientific computation (numpy, scipy, matplotlib), it's not as good for dynamic visualization (pygame?).

You know what's a very mature and flexible tool for drawing graphics? The DOM! For simple graphics you can use HTML and CSS; for more complicated stuff you can use Canvas, SVG, or WebGL. There are countless frameworks, libraries, and tutorials to help you draw exactly what you need. In my case, this was the animation I wanted:

(Each row represents a "worker" in my model, and each rectangle represents a "task.")

	library(drake)
	library(dplyr)
	library(purrr)
	library(assertr)
	library(tabulizer)

	matrix_to_tbl <- function(data) {
	data %>%
	as.data.frame(stringsAsFactors = FALSE) %>%
	janitor::clean_names() %>%

	#!/bin/sh

	HCIATTACH=/usr/bin/hciattach
	if grep -q "Pi 4" /proc/device-tree/model; then
	BDADDR=
	else
	SERIAL=`cat /proc/device-tree/serial-number \| cut -c9-`
	B1=`echo $SERIAL \| cut -c3-4`
	B2=`echo $SERIAL \| cut -c5-6`
	B3=`echo $SERIAL \| cut -c7-8`

	{

	"scripts": {
	"dev": "sapper dev",
	"format:check": "prettier --check './*/.{js,ts,css,html,svelte}'",
	"format": "prettier --write './*/.{js,ts,css,html,svelte}'",
	"build": "NODE_ENV=production sapper build",
	"export": "NODE_ENV=production sapper export",
	"start": "node __sapper__/build",
	"cy:run": "cypress run",

	// Tracking cursor position in real-time without JavaScript
	// Demo: https://twitter.com/davywtf/status/1124146339259002881

	package main

	import (
	"fmt"
	"net/http"
	"strings"
	)

	---
	title: Glossary
	output:
	bookdown::pdf_document2:
	template: two-col.latex
	latex_engine: xelatex
	number_sections: FALSE
	toc: False
	pandoc_args: ["--lua-filter", "sort_definition_list.lua"]
	includes: