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# ssh key generator data source expects the below 3 inputs, and produces 3 outputs for use:
#  "${data.external.ssh_key_generator.result.public_key}" (contents)
#  "${data.external.ssh_key_generator.result.private_key}" (contents)
#  "${data.external.ssh_key_generator.result.private_key_file}" (path)
data "external" "ssh_key_generator" {
  program = ["bash", "${path.root}/../ssh_key_generator.sh"]

  query = {
    customer_name = "${var.customer_name}"
    customer_group = "${var.customer_group}"

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Save outputs from a resource to a YAML file:

# Module Alpha
# https://www.terraform.io/docs/providers/aws/r/s3_bucket_object.html
resource "aws_s3_bucket_object" "outputs" {
  bucket = local.metadata_bucket
  key    = "${local.key_path}/organization.yml"
  content = yamlencode({
    "organization_arn" : aws_organizations_organization.default.arn
 "organization_id" : aws_organizations_organization.default.id

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Save outputs from a resource to a YAML file:

# Module Alpha
# https://www.terraform.io/docs/providers/aws/r/s3_bucket_object.html
resource "aws_s3_bucket_object" "outputs" {
  bucket = local.metadata_bucket
  key    = "${local.key_path}/organization.yml"
  content = yamlencode({
    "organization_arn" : aws_organizations_organization.default.arn
 "organization_id" : aws_organizations_organization.default.id

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/*
 * The aim of this is to try to detect changes in messages.
 * A change in a message should correlate to an action/operation performed on the vehicle.
 */
 
import processing.serial.*;
import java.lang.IllegalArgumentException;
import java.lang.System;
import java.util.Map;

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Build a OS image with QEMU and Ubuntu Cloud Image

Prerequirements

• Packer
• QEMU
• Docker

Build an image of cloud-init settings

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Guide: Run FreeBSD 13.1-RELEASE for ARM64 in QEMU on Apple Silicon Mac (MacBook Pro M1, etc) with HVF acceleration (Hypervisor.framework)

This guide was adapted from https://gist.github.com/niw/e4313b9c14e968764a52375da41b4278#running-ubuntu-server-for-arm64

Running FreeBSD 13.1-RELEASE for ARM64

1. Install Xcode from App Store or install Command Line Tools on your Mac running on Apple Silicon.

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#!/usr/bin/env -S awk -f
# https://gist.github.com/yermulnik/7e0cf991962680d406692e1db1b551e6
# Tested with GNU Awk 5.1.0, API: 3.0 (GNU MPFR 4.1.0, GNU MP 6.2.1)
# Usage: /path/to/tf_vars_sort.awk < variables.tf | tee sorted_variables.tf
# Note: "chmod +x /path/to/tf_vars_sort.awk" before use
# No licensing; yermulnik@gmail.com, 2021-2024
{
	# skip blank lines at the beginning of file
	if (!resource_type && length($0) == 0) next

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#!/usr/bin/env -S awk -f
# https://gist.github.com/yermulnik/7e0cf991962680d406692e1db1b551e6
# Tested with GNU Awk 5.1.0, API: 3.0 (GNU MPFR 4.1.0, GNU MP 6.2.1)
# Usage: /path/to/tf_vars_sort.awk < variables.tf | tee sorted_variables.tf
# Note: "chmod +x /path/to/tf_vars_sort.awk" before use
# No licensing; yermulnik@gmail.com, 2021-2024
{
	# skip blank lines at the beginning of file
	if (!resource_type && length($0) == 0) next

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NixOS on an Oracle Cloud VM

This gist was made for my own reference, but feel free to follow along. You should use your own Nix flake.

Booting NixOS

Since NixOS is not an official image for use on Oracle Cloud VM's, and users have reported that uploading the NixOS image does not work, we will use kexec to boot the installer.

sudo -i

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Remaster Linux ISO:

• https://nixaid.com/linux-on-macbookpro/
• https://www.techrepublic.com/article/how-to-create-a-custom-ubuntu-iso-with-cubic/

Useful links:

• https://www.maketecheasier.com/install-dual-boot-ubuntu-mac/
• https://www.rodsbooks.com/refind/bootcoup.html#efibootmgr
• https://github.com/Dunedan/mbp-2016-linux
• Dunedan/mbp-2016-linux#6 (comment)