Chen Yufei cyfdecyf

Cents & Sensibility: The Ledger Luminaries' Revolution

I'm scared to account; scared of statements of business dealings, credits and debits, and tracking of all this money-related stuff. Scared of reciting these transaction histories, and yet reckoning with these computations and enumerations is as deathly certain as taxes.

It is silly that this problem has not been solved given fancy new technology like AI and large language models. It's also silly how much big institutions skim off the top, like 1.5–3.5% per credit card transaction, and our expanding web of subscriptions to Substacks, Youtubes and the like that become more numerous and Medusa-like the harder they are to track, aggregate, categorize, and analyze across instutitions. I'm also scared of Mint.com (I used it for many years) as they broker our data, but still need the help of software and technology to manage money. This feels like a data problem that should have been solved long ago 🤯

So the goal here was to spend a few hours on a weekend t

Intro

Karabiner and KMonad are great open source software. Don't forget to support the authors and contributors.

If you want to try home row mods on OSX, don't use Karabiner but KMonad. KMonad is harder at the beginning but then it is easier than Karabiner. Creating layers in KMonad is trivial and without drawbacks, while it is impossible in Karabiner without drawbacks.

You need to compile a PR of the project. Install https://github.com/pqrs-org/Karabiner-DriverKit-VirtualHIDDevice/releases/download/v2.1.0/Karabiner-DriverKit-VirtualHIDDevice-2.1.0.pkg

Ubuntu 22.04 Annoyances

Here are a few collected ways I like to customize Ubuntu 22.04 servers. I used to love Ubuntu, but I hate auto updates and snaps. They also put ads and other usless ads diguised as "news" in MOTD. ESM FUD is spread throughout the OS including simple apt functions. You do not need ESM and thus Ubuntu 22.04 has become super annoying. unattended-upgrade is an automatic installation of security (and other) upgrades without user intervention. Consider the ramifications of disabling this service.

Disable unattended upgrades

The Unattended Upgrades feature is enabled by default and it runs at system boot without the user's permission. The configuration is stored in /etc/apt/apt.conf.d/20auto-upgrades

Disable: sudo dpkg-reconfigure unattended-upgrades then a TUI will come up, select "No"

This will not permantently disable the function. After an update it will be enabled. In the file /etc/apt/apt.conf.d/20auto-upgrades change these values from 1 to 0. Even doing this it will

Upgrade systemd on Ubuntu 18.04

In this document, I will explain how to upgrade the default systemd version from 237 to 242.

The main reason why I needed this was related to the DNS-over-TLS that was not supported in the version 237 but available from version 242.

Later, when playing with Lynis, the security auditing tool, I then discovered that the version 242 was also providing the command systemd-analyze that is used by lynis to detect if existing systemd services are configured correctly in the security context, meaning that the existing services can run as expected but needs few or several changes in their configuration to make them safe without any exploitable attack surfaces.

You can try it once you've installed the version 242 of systemd that way:

WARNING

THIS GIST IS EXTREMELY OBSOLETE. DO NOT FOLLOW THESE INSTRUCTIONS. SERIOUSLY.

IF YOU IGNORE THE ABOVE WARNING, YOU AGREE IN ADVANCE THAT YOU DIDN'T GET THESE INSTRUCTIONS FROM ME, THAT I WARNED YOU, AND THAT I RESERVE THE RIGHT TO POINT AND LAUGH MOCKINGLY IF AND WHEN SOMETHING BREAKS HORRIBLY.

I'll do a write-up of current custom-kernel procedures over on Random Bytes ( https://randombytes.substack.com/ ) one day soon.

NOTE

C++ : Polymorphic inheritance without vtable

In this article, we will see how to use CRTP, std::variant and std::visit to increase our code performances.

	import magic
	import r2pipe
	import hashlib
	import argparse
	import subprocess
	from unicorn import *
	from unicorn.x86_const import *
	# from udbserver import * # uncomment this line if you want to debug

	def pad_size(size):

	import requests
	import os
	from collections import defaultdict

	# I have photos in subfolders like :
	# /mnt/media/Photos/2023-08 Holidays
	# /mnt/media/Photos/2023-06 Birthday
	# /mnt/media/Photos/2022-12 Christmas
	# This script will create 3 albums
	# 2023-08 Holidays, 2023-06 Birthday, 2022-12 Christmas

	// For all the confusing Prometheus configuration and
	// regular expressions,
	// explained in examples.


	// Remember, there are default values for each item if it's missing.
	// regex is (.*),
	// replacement is $1,
	// separator is ;
	// ,and action is replace

	#!/usr/bin/env bash

	# tlrecode.sh
	# Decode and encode TP-LINK router config files.
	#
	# Creative Commons CC0 License:
	# http://creativecommons.org/publicdomain/zero/1.0/
	#
	# To the extent possible under law, the person who associated CC0 with this
	# work has waived all copyright and related or neighboring rights to this work.