byrongibson

/*****************************************************************************
 *                QuantCup 1:   Price-Time Matching Engine
 *
 * Submitted by: voyager
 *
 * Design Overview:
 *   In this implementation, the limit order book is represented using
 *   a flat linear array (pricePoints), indexed by the numeric price value.
 *   Each entry in this array corresponds to a specific price point and holds
 *   an instance of struct pricePoint. This data structure maintains a list

byrongibson

    networking.firewall = {
      # 8000 = Rustdesk?
      # 21115-21117 = Rustdesk  https://rustdesk.com/docs/en/self-host/
      # 21118 and 21119 = Rustdesk Web Client
      allowedUDPPorts = [ ... 22 21116 ... ];
      allowedTCPPorts = [ ... 22 8000 21115 21116 21117 21118 21119 ... ];
    };

    systemd.tmpfiles.rules = [
      "d /opt/rustdesk 0700 root root"

byrongibson

mkfifo /tmp/gfifo

./xdp-screen-cast-ffmpeg.py &  # or run in another terminal
# Note the gstreamer pipeline
# 'pipewiresrc fd=%d path=%u ! videorate ! video/x-raw,framerate=60/1 ! videoconvert ! filesink location=/tmp/gfifo'
# I specified a 60/1 frameerate. You can do other pre-processing here, or offload it to ffmpeg.

# Encode the stream and pipe to netcat
# note: must specify correct resolution here
# we can now use h264_nvenc, mpegts, and anything else ffmpeg has

byrongibson

// I'm tired of extensions that automatically:
// - show welcome pages / walkthroughs
// - show release notes
// - send telemetry
// - recommend things
//
// This disables all of that stuff.
// If you have more config, leave a comment so I can add it!!

{

byrongibson

Zoom Sucks

• Zoom abuses the installer flow on MacOS to bypass permissions dialogs (source)
• Zoom sends identifying device info to Facebook, even when users don't have a Facebook account (source) (fixed)
• A bug in Zoom sent identifying information (including email addresses and profile pictures) of thousands of users to strangers (source)
• Zoom claims that meetings are end-to-end encrypted in their white paper and marketing materials, but meetings are only encrypted in transit, and are available in plaintext to Zoom servers and employees. (source)
• zoomAutenticationTool can be used to escalat

byrongibson

#!/usr/bin/env bash

# A NixOS partition scheme with UEFI boot, root on tmpfs, everything else 
# on encrypted ZFS datasets, and no swap.
# This script assumes two target drives is already formatted with two partitions:
# 1. 1GB FAT32 UEFI boot partition (each Nix generation consumes about 20MB on 
#    /boot, so size this based on how many generations you want to store)
# 2. the remainder of the disk formatted for ZFS.

# This script creates the following:

byrongibson

  # Use EFI boot loader with Grub.
  # https://nixos.org/manual/nixos/stable/index.html#sec-installation-partitioning-UEFI
  boot = {
    supportedFilesystems = [ "vfat" "zfs" ];
    initrd = {
      network.ssh.enable = true;
      supportedFilesystems = [ "vfat" "zfs" ];
    };
    zfs = {
      requestEncryptionCredentials = true;  # enable if using ZFS encryption, ZFS will prompt for password during boot

byrongibson

#!/usr/bin/env bash
# Rebuild NixOS.  Snapshots system before rebuilds that are not dry-run, 
# dry-activate, or rollback.  Expects one required argument to nixos-rebuild:
# 'switch', 'boot', 'test', 'build', 
# 'build-vm', 'build-vm-with-bootloader' 
# 'dry-rebuild', 'dry-activate'
# optional arguments begin with --.  Ex: --upgrade, --upgrade-all, --rollback, etc.

#error handling on
set -e

byrongibson

# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, modulesPath, ... }:

{
  imports =
    [ (modulesPath + "/hardware/network/broadcom-43xx.nix")
      (modulesPath + "/installer/scan/not-detected.nix")
    ];

byrongibson

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{

################################################################################
# System