Art Witczak artbikes

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

When you set Let's Encrypt up, you will:

generate a key on your computer (among other things), which we will call domain.key
regularly update a certificate file via Let's Encrypt (most probably using one of the Acme Client Implementations), we will call this file domain.crt

The domain.key file is for your eyes only; you should keep it safe where you run taskd and set server.key to point to it.

git diff --no-prefix > [path file name]

patch -p0 < [path file name]

	Ansible playbook to setup HTTPS using Let's encrypt on nginx.

	The Ansible playbook installs everything needed to serve static files from a nginx server over HTTPS.
	The server pass A rating on [SSL Labs](https://www.ssllabs.com/).

	To use:
	1. Install [Ansible](https://www.ansible.com/)
	2. Setup an Ubuntu 16.04 server accessible over ssh
	3. Create `/etc/ansible/hosts` according to template below and change example.com to your domain
	4. Copy the rest of the files to an empty directory (`playbook.yml` in the root of that folder and the rest in the `templates` subfolder)

	# start vault in dev mode
	VAULT_UI=true vault server -dev -dev-root-token-id="password"

	# write some secrets for our example usage
	curl --request POST \
	--silent \
	--header "X-Vault-Token: password" \
	--header "Content-Type: application/json" \
	--data '{ "options": { "cas": 0 }, "data": { "username": "administrator", "password": "hunter2" } }' \
	http://127.0.0.1:8200/v1/secret/data/dev \| jq '.'

	mongoserver:PRIMARY> rs.status();
	{
	"set" : "mongoserver",
	"date" : ISODate("2016-02-02T10:47:07.510Z"),
	"myState" : 1,
	"members" : [
	{
	"_id" : 3,
	"name" : "192.168.1.10:37017",
	"health" : 1,

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	package main

	import (
	"fmt"
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	)

	func main() {