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#!/bin/bash -e

IFADDR="192.168.3.1/24"

if [[ ! ip link show docker0 ]]; then
  ip link add docker0 type bridge
  ip addr add "$IFADDR" dev docker0
  ip link set docker0 up
  iptables -t nat -A POSTROUTING -s "$IFADDR" ! -d "$IFADDR" -j MASQUERADE
fi

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---
# ^^^ YAML documents must begin with the document separator "---"
#
#### Example docblock, I like to put a descriptive comment at the top of my 
#### playbooks.
#
# Overview: Playbook to bootstrap a new host for configuration management.
# Applies to: production
# Description: 
#   Ensures that a host is configured for management with Ansible.

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#!/bin/bash

# Script for installing tmux on systems where you don't have root access.
# tmux will be installed in $HOME/local/bin.
# It's assumed that wget and a C/C++ compiler are installed.

# exit on error
set -e

TMUX_VERSION=1.8

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from sqlsoup import SQLSoup as sql
from sys import argv

DIGRAPH = """digraph structs {
    graph [
       rankdir= "LR"
       bgcolor=white
    ]

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Introduction

A Go version of The Perl Cookbook

The Perl part is copyrighted by O'Reilly & Associates yet freely available.

This copy is based on http://pleac.sourceforge.net/pleac_perl.data

Strings

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// Parsing arbitrary JSON using interfaces in Go
// Demonstrates how to parse JSON with abritrary key names
// See https://blog.golang.org/json-and-go for more info on generic JSON parsing

package main

import (
	"encoding/json"
	"fmt"
)

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An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

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if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
	// path/to/whatever does not exist
}

if _, err := os.Stat("/path/to/whatever"); err == nil {
	// path/to/whatever exists
}

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Installing Ubuntu 16.04 with btrfs using debootstrap

Partition layout

First, create a GPT partition table.

1. boot partition, label: EFI, flags: boot + ESP; size: 1GB, format to FAT32;
2. root partition (label: root), must same size on all devices!
3. swap partition.

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package main

import (
	"net/http"
	"database/sql"
	"fmt"
	"log"
	"os"
)