DavesCodeMusings

# Auto-incrementing property
class Test:
    _packet_id = -1

    @property
    def packet_id(self):
        self._packet_id += 1
        self._packet_id &= 0xFF  # Truncate to 8-bit max
        return self._packet_id

DavesCodeMusings

#!/usr/bin/env node

function ipv4Compare(a, b) {
  let aOctets = a.split('.');
  let bOctets = b.split('.');
  if (aOctets.length !== 4 || bOctets.length !==4) {
    throw("InvalidIPv4Address");
  }

  if (parseInt(aOctets[0]) > parseInt(bOctets[0])) {

DavesCodeMusings

check program containers with path "/usr/bin/docker ps --format '{{ .Names }}' --filter 'status=exited'"
    every 120 cycles
    if content != "" then alert

DavesCodeMusings

# Create order from chaos
awk '{ printf "%-42s %-16s %-8s %-12s %2s %2s\n", $1, $2, $3, $4, $5, $6 }' /etc/fstab > /etc/fstab.new

DavesCodeMusings

#!/bin/sh

# Generate a random complex password on a Linux system.

tr -dc 'A-Za-z0-9!"#$%&'\''()*+,-./:;<=>?@[\]^_`{|}~' </dev/urandom | head -c 32; echo

# Reference:
# https://owasp.org/www-community/password-special-characters
# https://www.gnu.org/software/coreutils/manual/html_node/tr-invocation.html

DavesCodeMusings

Ventoy Flash Drive as VirtualBox Boot Device

This document shows how to use a Ventoy formatted USB device (instead of an optical disk) to boot an ISO image in VirtualBox. There are other HowTo documents on the internet that explain this procedure (one is mentioned in the References section below), but most use a deprecated VBoxManage sub-command to create the raw device. This document uses the preferred createmedium sub-command. It also uses PowerShell rather than cmd.exe.

The generic form of the command that makes the Ventoy USB drive available to VirtualBox is as follows:

.\VBoxManage createmedium disk --filename=PATH --format=VMDK --variant=RawDisk --property RawDrive=DEVICE_NAME

But, there are some prerequisites...

DavesCodeMusings

esphome:
  name: s31-1
  friendly_name: s31-1

esp8266:
  board: esp01_1m
  early_pin_init: False  # Mitigate relay flipping on reboot.

# Disable logging (UART is used by cse7766 power sensor.)
logger:

DavesCodeMusings

# Add this to configuration.yaml and you can select a theme for navigation buttons,
# and possibly other cards, that will show the text and icon in the accent color
# for the overall theme. For example, in dark mode the accent color is orange, so
# any card having this theme will show in orange.
frontend:
  themes:
    accent:
      primary-text-color: "var(--accent-color)"
      paper-item-icon-color: "var(--accent-color)"

DavesCodeMusings

FROM lscr.io/linuxserver/code-server:latest

# Add Python support
RUN apt-get update \
    && apt-get install -y \
      python3 \
      pylint \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

DavesCodeMusings

REM Shamelessly lifted from StackOverflow.
REM https://stackoverflow.com/questions/16073603/how-can-i-update-each-dependency-in-package-json-to-the-latest-version
REM Change directory to your extention's code directory and run the commands below.
REM `npm install -g npm-check-updates` installs the ncu utility and only needs to be run once per system.
REM Repeat ncu -u and npm install as needed for each extension's code directory.

npm install -g npm-check-updates
ncu -u
npm install