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Hurdles of macOS distribution

Code signing
Notarization
Quarantine
Distribution vehicles
Notes

Code signing

NB: This document describles a 'Old-School' way of using Yubikey with SSH

Modern OpenSSH has native support for FIDO Authentication. Its much simpler and should also be more stable with less moving parts. OpenSSH also now has support for signing arbitary files witch can be used as replacement of gnupg. Git also supports signing commits/tags with ssh keys.

Pros of FIDO

Simpler stack / less moving parts
Works directly with ssh, ssh-add and ssh-keygen on most computers
Simpler
Private key can never leave the FIDO device

Cons of FIDO

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

TLDR:

yum clean all == clean most
rm -rf /car/cache/yum/* == really clean everything

From the man page:

Note that these commands only operate on files in currently enabled
repositories. If you use substitution variables (such as $releasever) in your cachedir configuration, the operation is further restricted to the current
values of those variables.

Run `node` scripts using `nvm` and `crontab` without hardcoding the node version

cronjob.env.sh

#!/bin/bash

# NVM needs the ability to modify your current shell session's env vars,
# which is why it's a sourced function

Step by step guide to downloading protected PDF from Google Drive

Open the document in Google Docs
Scroll to the bottom of the document, so all the pages are present
Open Developer Tools on separate window and choose the Console tab
Paste the code
Have fun!

	# ~/.bashrc: executed by bash(1) for non-login shells.
	# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
	# for examples

	# If not running interactively, don't do anything
	[ -z "$PS1" ] && return

	# don't put duplicate lines in the history. See bash(1) for more options
	# ... or force ignoredups and ignorespace
	HISTCONTROL=ignoredups:ignorespace

	// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
	// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
	(() => {
	const SHOW_SIDES = false; // color sides of DOM nodes?
	const COLOR_SURFACE = true; // color tops of DOM nodes?
	const COLOR_RANDOM = false; // randomise color?
	const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
	const MAX_ROTATION = 180; // set to 360 to rotate all the way round
	const THICKNESS = 20; // thickness of layers
	const DISTANCE = 10000; // ¯\\_(ツ)_/¯

	# ========================================================
	# Setup a Dumb AP, Wired backbone for OpenWRT / LEDE
	# ========================================================
	# Set lan logical interface as bridge (to allow bridge multiple physical interfaces)
	uci set network.lan.type='bridge'
	# assign WAN physical interface to LAN (will be available as an additional LAN port now)
	uci set network.lan.ifname="$(uci get network.lan.ifname) $(uci get network.wan.ifname)"
	uci del network.wan.ifname
	# Remove wan logical interface, since we will not need it.
	uci del network.wan

	import tiktoken
	import langdetect
	T = tiktoken.get_encoding("o200k_base")

	length_dict = {}

	for i in range(T.n_vocab):
	try:
	length_dict[i] = len(T.decode([i]))
	except: