kush ankushnarula

`urwasm`: WebAssembly interpreter suite on Urbit

WebAssembly is a low-level language for a portable virtual machine. Wasm is designed to be a compilation target for a variety of programming languages and its design is hardware independent and relatively simple, making its support ubiquitous in modern browsers. Its simple design made it a perfect first candidate for a first emulator of an conventional computational system on a novel functional computer: Urbit. In this paper I discuss the current state of urwasm project and some technical details, as well as describe the strategy to jet the interpreter of a state machine in a functional environment.

Introduction

Importing a Docker container into Proxmox/LXC

Importing the container

For this we are going to be using lxc-create, which comes pre-installed on Proxmox but needs further dependencies to fetch the OCI images from Docker:

apt update && apt -y install skopeo umoci jq

Generating Authy passwords on other authenticators

There is an increasing count of applications which use Authy for two-factor authentication. However many users who aren't using Authy, have their own authenticator setup up already and do not wish to use two applications for generating passwords.

Since I use 1Password for all of my password storing/generating needs, I was looking for a solution to use Authy passwords on that. I couldn't find any completely working solutions, however I stumbled upon a gist by Brian Hartvigsen. His post had a neat code with it to generate QR codes for you to use on your favorite authenticator.

His method is to extract the secret keys using Authy's Google Chrome app via Developer Tools. If this was not possible, I guess people would be reverse engineering the Android app or something like that. But when I tried that code, nothing appeared on the screen. My guess is that Brian used the

Building Bitcoin Core with GUI on Alpine Linux

System

$ cat /etc/alpine-release
3.13.5

Bitcoin Core repository

Why Docker Desktop?

It can start urbit automatically in the background each time you login to windows
Has a gui to turn urbit on/off if you don't want it running all the time
Sets up port forwarding to your host device's ip, which plain wsl makes difficult. So you can access landscape from other devices on your lan, or forward ports to your router to get external access
Automatic updates to the urbit binary

See https://subject.network/posts/urbit-windows-docker/ for an enhanced take on this guide, with screenshots and more.

	/*
	* This document is provided to the public domain under the
	* terms of the Creative Commons CC0 public domain license
	*/

	How to boot Arch Linux ARM in QEMU (patched for M1)

	Prerequisites:

	QEMU - patched for M1 processors - patches: https://github.com/utmapp/qemu

	Mute these words in your settings here: https://twitter.com/settings/muted_keywords

	ActivityTweet
	generic_activity_highlights
	generic_activity_momentsbreaking
	RankedOrganicTweet
	suggest_activity
	suggest_activity_feed
	suggest_activity_highlights
	suggest_activity_tweet

	### extract videos as mp3 files
	youtube-dl -x --audio-format mp3 <video link>

	### get highest resolution audio & video
	To download a video, you type the URL after the command like so:

	youtube-dl <video link>

	To select the video quality, first use the -F option to list the available formats, here’s an example,

	library(dplyr)
	library(reshape2)
	library(ggplot2)

	DataPath="." # you may need to update this if not working from same path
	setwd(DataPath)

	# Data from version 2.0 of covariates and pooled score estimates from SEDA
	# https://cepa.stanford.edu/seda/data-archive

	#!/usr/bin/env python3
	import sys
	import subprocess as sp
	from pathlib import Path
	from argparse import ArgumentParser
	from configparser import ConfigParser


	def ssh(host, cmd):
	return sp.check_output(['ssh', host, cmd]).strip().decode()