Kenny MacDermid KenMacD

Original "dumb" smoke detector interconnect sounds the siren on all interconnected smoke detectors when a 9-to-12 volt (referenced to neutral/white) direct-current signal is continuously present on the signal wire (red). This still how pretty much all interconnected smoke alarms indicate a fire condition.

However, modern interconnected detectors are capable of detecting carbon monoxide and other conditions. When these conditions are signaled, they must be identified as something other than a smoke alarm by the other detectors. Ideally, any dumb smoke detectors

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

List of intended memory-management policies (note: the actual policies are below, after both kinds of modifiers):

structure modifiers:

relative - own address is added to make effective pointer. Useful for realloc and memcpy, as well as shared memory.
middle_pointer - actually points to the middle of an object, with a known way to find the start
- note particularly how this interacts with subclasses. Possibly that should be the only way to create such a pointer? It isn't too crazy to synthesize a subclass just for the CowString trick ...
(other arithmetic tricks possible: base+scale+offset, with each of these possibly hard-coded (which requires that there be multiple copies of some ownership policies! we can't just use an enum) or possibly embedded)
(but what about "object is stored in a file too large to mmap" and such? Or should those only satisfy "ChunkyRandomIterator" concept?)

Ubiquity EdgeMAX Ad & Malware Blocking Content Filtering using EdgeRouter

NB: I am not using this setup anymore, and will not update the config and code if it breaks. I recommend Pi-hole instead, which gives many features such as web UI, statistics, DNS-over-HTTPS, and definitely better written code ;)

This will show you how to use your EdgeRouter as a local DNS server and blocking DNS queries to domains that hosts ads and malware.

The blocklist used is:

'hosts' by Steven Black

Replacing Netflix and Amazon keys of the webOS LG TV LG Magic Remote with other apps

This procedure allows substituting one or both Netflix and Amazon keys of the Magic Remote Control Unit with other apps or TV control menus of the webOS LG TV.

Netflix and Amazon keys can be found just over the Red-Green-Yellow-Blue color buttons of such remote.

Assumption for this procedure is that you accept to uninstall the apps related to the keys to be substituted. Example: if you want to replace the Netflix key, you need to uninstall Netflix (possibly, you are not using Netflix if you do not need such key).

To uninstall Netflix or Amazon Prime, press the Home key of the Magic Remote, select the "LG Content Store" app, press "APP" at the top of the screen, press "My Apps", press the "Rem

Sway output mirror and screencast

Mirror

wf-recorder

With wf-recorder it is possible to record one output. When ffmpeg is compiled with sdl support, then it is possible to use "sdl" as the muxer and replay the recorded video instead of writing it to a file.

	# I used this shell.nix to build LineageOS 13.0 for my maguro (Samsung Galaxy Nexus GSM) phone
	# The build instructions for normal Linuxes are here: https://wiki.lineageos.org/devices/maguro/build
	# For NixOS, follow those instructions but skip anything related to installing packages
	# Detailed instructions:
	# cd into an empty directory of your choice
	# copy this file there
	# in nix-shell:
	# $ repo init -u https://github.com/LineageOS/android.git -b cm-13.0
	# $ repo sync
	# $ source build/envsetup.sh

	# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
	# generate server.pem with the following command:
	# openssl req -new -x509 -keyout key.pem -out server.pem -days 365 -nodes
	# run as follows:
	# python simple-https-server.py
	# then in your browser, visit:
	# https://localhost:4443


	import http.server

	#!/bin/bash

	CONFIG_PATH=~/.config/Code

	for i in $CONFIG_PATH/User/workspaceStorage/*; do
	if [ -f $i/workspace.json ]; then
	folder="$(python3 -c "import sys, json; print(json.load(open(sys.argv[1], 'r'))['folder'])" $i/workspace.json 2>/dev/null \| sed 's#^file://##;s/+/ /g;s/%\(..\)/\\x\1/g;')"

	if [ -n "$folder" ] && [ ! -d "$folder" ]; then
	echo "Removing workspace $(basename $i) for deleted folder $folder of size $(du -sh $i\|cut -f1)"

	const router = require('./router');

	router.setRoutes([
	{
	path: '/ping',
	method: 'GET',
	handler: ping
	},
	{
	path: '/hello/:name',