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  # https://developers.google.com/identity/protocols/OAuth2ServiceAccount

  key_json = File.read!("some-service-account-key-file.json")
  key_map  = JOSE.decode(key_json)

  jwk = JOSE.JWK.from_pem(key_map["private_key"])

  jws = %{"alg" => "RS256"}

  header = %{

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ssh-keygen -t rsa -b 4096 -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

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defmodule EctoBatchStream do
  import Ecto.Query, only: [from: 1, from: 2]

  @batch_size 1000

  # Example:
  #
  #     query = from u in MyApp.User, select: u.email
  #     stream = EctoBatchStream.stream(MyApp.Repo, query)
  #     stream |> Stream.take(3) |> Enum.to_list # => […]

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defmodule PhoenixTest.PageController do
  use PhoenixTest.Web, :controller

  def index(conn, _params) do
    render conn, "index.html"
  end

  def proxy(conn, params) do
    query_string = conn.query_string
    path = Enum.join(params["path"], "/")

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machine:
  node:
    version: 6.2.0
  environment:
    PATH: "$HOME/.asdf/bin:$HOME/.asdf/shims:$PATH"
    MIX_ENV: "test"
  services:
    - postgresql

database:

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# Use this to look for broken links in your app.
# crawls the development server http://localhost:3000
# Suggestion: Also check to make sure that intentional 404s
#             are handled gracefully by app.

task :crawl => :environment do
  require 'anemone'
  root = 'http://localhost:3000'
  options = {:discard_page_bodies => true, :verbose => true}

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# post_loc.txt contains the json you want to post
# -p means to POST it
# -H adds an Auth header (could be Basic or Token)
# -T sets the Content-Type
# -c is concurrent clients
# -n is the number of requests to run in the test

ab -p post_loc.txt -T application/json -H 'Authorization: Token abcd1234' -c 10 -n 2000 http://example.com/api/v1/locations/

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Headless Ethminer (nVidia) Setup Guide

Cian Johnston, July 2017

A couple of weeks ago, I decided I should put my gaming rig to work crypto mining. I did not expect to make any significant profit on this, it was more of a fun project to set up. However, there were a large number of tutorials and guides already out there, and many were more than a year out of date.

This guide assumes the reader already has a crypto wallet set up, is comfortable with Linux and the command line, and knows how to use Google if they run into problems.

The end result is an Ubuntu 16.04 LTS headless server running CUDA ethminer via systemd.

Hardware

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[Unit]
Description=Keeps a tunnel to 'remote.example.com' open
After=network.target

[Service]
User=autossh
# -p [PORT]
# -l [user]
# -M 0 --> no monitoring
# -N Just open the connection and do nothing (not interactive)

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README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target