devries

#!/usr/bin/env python3
"""Command generator for setting DHCP Option 119

This script converts the specified domain names to DHCP Option 119
(Domain Search Option) and prints commands for various DHCP servers.

USAGE:
  ./dhcp_option119.py DOMAIN ...

EXAMPLE:

devries

#!/bin/sh

# This file goes in /etc/sysctl.d to set up a stable-privacy IPv6 Address

cat > 50-rfc7217.conf <<EOF
# Set up a secret for RFC7217 private static IPv6 address
net.ipv6.conf.default.stable_secret = $(hexdump -n 16 -e '7/2 "%04x:" 1/2 "%04x" "\n"' /dev/urandom)
EOF

devries

unbind C-b
set -g prefix C-a
bind C-a send-prefix
bind-key a send-keys C-a

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package main

import (
	"bytes"
	"fmt"
	"os"
	"os/exec"
	"strings"
)

devries

package main

import (
	"context"
	"fmt"
	"math"
	"time"
)

func main() {

devries

FROM alpine:3.10
RUN apk update && apk upgrade
RUN apk add openssl curl ca-certificates
RUN printf "%s%s%s\n" \
    "http://nginx.org/packages/mainline/alpine/v" \
    `egrep -o '^[0-9]+\.[0-9]+' /etc/alpine-release` \
    "/main" \
    | tee -a /etc/apk/repositories
RUN curl -o /etc/apk/keys/nginx_signing.rsa.pub https://nginx.org/keys/nginx_signing.rsa.pub
RUN apk add nginx

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package main

import (
	"fmt"
	"sync"
	"time"
)

func main() {
	go setter()

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#!/usr/bin/env python

import time
import math

def main():
    #fout = open('spidev','w')
    fout = open('/dev/spidev2.0', 'w')
    ctr = 0

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FROM python:3.6-alpine

RUN apk add --update \
    gcc \
    make \
    musl-dev \
    libuv-dev \
    linux-headers \
    libxml2-dev \
    libxslt-dev \

devries

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.