SmartFinn

# MikroTik (RouterOS) script for automatically setting DNS records
# for clients when they obtain a DHCP lease.
#
# author SmartFinn <https://gist.github.com/SmartFinn>

:local dnsTTL "00:15:00";
:local token "$leaseServerName-$leaseActMAC";

# Normalize hostname (e.g. "-= My Phone =-" -> "My-Phone")
# - truncate length to 63 chars

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

themagicalmammal

Index

• Gummiboot
• Silent Grub
• Turn off Mitigations
• Disable Watchdog
• Kernel Parameters
• Fstab Modification
• Optimizing Boot
• Fix bad font rendering
• Getting rid of unnecessary packages

alexellis

This guide has moved to a GitHub repository to enable collaboration and community input via pull-requests.

https://github.com/alexellis/k8s-on-raspbian

Alex

jkcdarunday

#!/bin/bash
# Author: Jan Keith Darunday <github@jkcdarunday.mozmail.com>
# Description: A shell script that switches to the next available Pulseaudio output device/sink
# Note: This uses pactl instead of pacmd since pacmd is not available in pipewire

function get_current_sink() {
  pactl info | sed -En 's/Default Sink: (.*)/\1/p'
}

SINKS=$(pactl list short sinks | grep -v easyeffects)

aojea

Networking scenarios [Linux Only]

KIND runs Kubernetes cluster in Docker, and leverages Docker networking for all the network features: port mapping, IPv6, containers connectivity, etc.

Docker Networking

KIND uses a docker user defined network.

It creates a bridge named kind

jvns

Ruby and Python profilers

CPU profilers

Python

• cProfile
• https://github.com/bdarnell/plop (blog post)
• https://github.com/rkern/line_profiler
• https://github.com/uber/pyflame (blog post)

thomasdarimont

Setup

Add this to your .profile, .bashrc, .zshrc...

decode_base64_url() {
  local len=$((${#1} % 4))
  local result="$1"
  if [ $len -eq 2 ]; then result="$1"'=='
  elif [ $len -eq 3 ]; then result="$1"'=' 
  fi
 echo "$result" | tr '_-' '/+' | openssl enc -d -base64

kimbo

#!/usr/bin/env python
#
# Scrape Doh provider URLs from Curl's DNS-over-HTTPS wiki (https://raw.githubusercontent.com/wiki/curl/curl/DNS-over-HTTPS).
# 
# Example usage: ./scrape_doh_providers.py '"{} - {}".format(o["url"], o["name"])'
#
import argparse
import re
import urllib.request

aojea

KIND development workflow

1. Create your kind cluster (suit yourself https://kind.sigs.k8s.io/docs/user/configuration/)

cat <<EOF | kind create cluster --config=-
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane