BrianSigafoos

Convert AWS IAM credentials to AWS SMTP credentials

If you do, or want to, use AWS to deploy your apps, you will end up using AWS SES via SMTP when you're launching an app that sends out emails of any kind (user registrations, email notifications, etc). For example, I have used this configuration on various Ruby on Rails apps, however, it is just basic SMTP configurations and crosses over to any framework that supports SMTP sendmail.

There are two ways to go about this:

• EASY WAY: Create an SMTP user via AWS SES [http://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html#smtp-credentials-console]
• NOT SO EASY WAY: Create an SMTP password for an existing IAM user [^^ Same link scroll down]

Luckily, you found this MD file and the NOT SO EASY WAY is suddenly copy-pasta... sudo yum....

BrianSigafoos

# in test_helper.rb (for example)
def mock_env(partial_env_hash)
  old_env = ENV.to_hash
  ENV.update partial_env_hash
  begin
    yield
  ensure
    ENV.replace old_env
  end
end

BrianSigafoos

Stimulus cheatsheet

• Website: https://stimulusjs.org/
• GitHub repo: https://github.com/stimulusjs/stimulus
• Handbook: https://stimulusjs.org/handbook/introduction
• Discourse: https://discourse.stimulusjs.org/

Lifecycle callbacks

• initialize: once, when the controller is first instantiated
• connect: anytime the controller is connected to the DOM

BrianSigafoos

sudo apt-get -y update
sudo apt-get install -y build-essential libcurl4-openssl-dev unzip software-properties-common git libpcre3-dev libpcre3

adding zlib, openssl and pcre

cd && mkdir sources && cd sources
wget https://downloads.sourceforge.net/project/pcre/pcre/8.41/pcre-8.41.tar.gz && tar xzvf pcre-8.41.tar.gz

BrianSigafoos

# Original source: https://gist.github.com/hopsoft/56ba6f55fe48ad7f8b90
# Merged with: https://gist.github.com/kofronpi/37130f5ed670465b1fe2d170f754f8c6
# Benefits of: https://gist.github.com/e12e/e0c7d2cc1d30d18c8050b309a43450ac
# And fixes of: https://gist.github.com/joelvh/f50b8462611573cf9015e17d491a8a92
namespace :db do
  desc 'Dumps the database to backups'
  task dump: :environment do
    dump_fmt   = ensure_format(ENV['format'])
    dump_sfx   = suffix_for_format(dump_fmt)
    backup_dir = backup_directory(Rails.env, create: true)

BrianSigafoos

#!/bin/bash

#
# Initial script to create users when launching an Ubuntu server EC2 instance
#

declare -A USERKEY

#
# Create one entry for every user who needs access. Be sure to change the key to their

BrianSigafoos

Capybara

save_and_open_page

Matchers

have_button(locator)

BrianSigafoos

An introduction to curl using GitHub's API.

Basics

Makes a basic GET request to the specifed URI

curl https://api.github.com/users/caspyin

Includes HTTP-Header information in the output

BrianSigafoos

PSQL

Magic words:

psql -U postgres

If run with -E flag, it will describe the underlaying queries of the \ commands (cool for learning!).

Most \d commands support additional param of __schema__.name__ and accept wildcards like *.*

BrianSigafoos

# 1) Create your private key (any password will do, we remove it below)

$ cd ~/.ssh
$ openssl genrsa -des3 -out server.orig.key 2048


# 2) Remove the password

$ openssl rsa -in server.orig.key -out server.key