Mark Tearle mtearle

A Short IPv6 Guide for Home IPv4 Admins

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones.

Let’s begin.

First of all, there are some concepts that one must unlearn from ipv4:

Concept 1

What to do when Gmail marks all the mails from your server as spam

If you're self-hosting your services and having trouble getting your emails through Gmail and infuriated by Google's non-existent support, you're not the only one. I'd like to share my experiences trying to get it sorted out.

https://support.google.com/mail/thread/171517615?hl=en&msgid=172576102

I'm the author of the post above. You can tell how arrogant Google employees are from all the previous posts he made in the past.

Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2020-05-31: I won't be maintaining this page or responding to comments anymore (except for perhaps a few exceptional occasions). ]

Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

BT WiFi Maintain Connectivity Script

Usage

btauth --user USER_OR_EMAIL --pass PASSWORD # To Authenticate with the BT WiFi
btmaintain --user USER_OR_EMAIL --pass PASSWORD # To maintain a connection and re-authenticate automatically
nohup btmaintain --user USER_OR_EMAIL --pass PASSWORD 2&gt;&amp;1 &gt;/dev/null &amp; # Same as above but ran in background

	#!/usr/bin/env bash

	set -Eeuo pipefail
	trap cleanup SIGINT SIGTERM ERR EXIT

	script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

	usage() {
	cat <<EOF
	Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

	#!/usr/bin/env python
	import os, os.path, stat, sys, base64

	# TOTP lib inlined
	import time, hmac, base64, hashlib, struct


	def pack_counter(t):
	return struct.pack(">Q", t)

	# Ansible 'lineinfile' like function in Shell Script.
	# Works on both Bash and Zsh.

	function lineinfile(){
	if [[ $# != 3 ]];then
	local THIS_FUNC_NAME="${funcstack[1]-}${FUNCNAME[0]-}"
	echo "$THIS_FUNC_NAME - 3 arguments are expected. given $#. args=[$@]" >&2
	echo "usage: $THIS_FUNC_NAME PATTERN LINE FILE" >&2
	return 1
	fi

	#!/usr/bin/env python

	# This requires Python 2.7. This will not work with Python 3

	USERNAME = '[email protected]'
	PASSWORD = 'Your ovo Password'

	from requests import Request, Session
	import json
	import time

	# -- coding: utf-8 --

	import requests
	from io import BytesIO, SEEK_SET, SEEK_END

	class ResponseStream(object):
	def __init__(self, request_iterator):
	self._bytes = BytesIO()
	self._iterator = request_iterator

	#!/bin/bash

	loopdevice=/dev/loop0
	loopfile=crypt.loop

	#megabytes
	loopsize=256

	#/dev/mapper/xxxxx when open
	cryptmapper=myCrypt