nat-418

Why Tcl?

Introduction

I use [Tcl] as my scripting language of choice, and recently someone asked me why. This article is an attempt to answer that question.

Ousterhout's dichotomy claims that there are two general categories of programming languages:

kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

paultheman

Guide on how to remap Keyboard keys on macOS

Update 17.10.2024: macOS 15 no longer requires root privileges for hidutil, you need to add hidutil and Terminal to 'Input Monitoring' in Settings/Privacy & Security tab.

Update 13.04.2024: On macOS 14.2 hidutil requires root privileges.

If you have a mac with an INT (ISO) keyboard you might want to change the ± key to ~. During my research I found that the information on this topic is not at all centralized. I prefer this option because it does not involve installing new software.

With macOS 10.12 Sierra Apple introduced hidutil as a tool to remap keyboard keys. See TN2450.

max-i-mil

Linux Virtual Machines with Private Network on an Apple M1 Device

Background

The aim was to be able to:

1. Run multiple Linux VMs on an Apple M1/ARM device
2. Use Apple's HVF for native performance speeds
3. Configure VMs to allow network access to each other
4. Configure VMs to allow access to the internet
5. Not rely on custom modifications of software

yankcrime

K3s and Cilium with the Egress IP Gateway feature

This is a short guide to deploying a three-node Kubernetes cluster using K3s, including kube-vip to provide a HA control-plane and to manage LoadBalancer Service resources, and finally as Cilium as our CNI with the Egress Gateway feature enabled. We'll also heavily lean into Cilium's support for eBPF by doing away with kube-proxy entirely, but note that this does come with some limitations.

First, let's set some common options for K3s:

export K3S_VERSION="v1.22.4+k3s1"
export K3S_OPTIONS="--flannel-backend=none --no-flannel --disable-kube-proxy --disable-network-policy"

phortuin

Based on this blogpost.

To sign Git commits, you need a gpg key. GPG stands for GNU Privacy Guard and is the de facto implementation of the OpenPGP message format. PGP stands for ‘Pretty Good Privacy’ and is a standard to sign and encrypt messages.

Setting up

Install with Homebrew:

$ brew install gpg

prologic

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

ityonemo

A half-hour to learn Zig

This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/

Basics

the command zig run my_code.zig will compile and immediately run your Zig program. Each of these cells contains a zig program that you can try to run (some of them contain compile-time errors that you can comment out to play with)

plembo

Want to configure UPnP on EdgeRouter-4?

Don't do it!

Introduction

As a former sysadmin that once helped ride herd over around 1,000 servers, of which around 10% were Internet-facing, I've never been a fan of autoconfiguation when it comes to punching holes through the firewall. I've seen the tripwire logs, and it's sobering.

The Problem

So enabling UPnP on my EdgeRouter-4 wasn't something I had on the roadmap, but when I ran into difficulty getting DLNA to work on the default VLAN, I thought it was worth looking into (never mind that, as I later learned, having UPnP turned on wasn't going make a bit of difference on my local network: another reason that mastering theory should always come before practice).

mikestecker

optimising-unifi-performance

NOTE: Content below is written by Adrian Mace. Click here for an updated version.

Below are the key settings that I apply on any unifi installation for optimal performance.

Settings

Settings > Site

• Ensure Enable Advanced Features is enabled
  This allows you to follow along with the guide in it's entirety.