tomgidden’s gists

tomgidden / update_dns

Created November 30, 2022 13:18

Low-dependency bash script to upsert/delete current Droplet public and private IPs in DigitalOcean DNS

	#!/bin/bash

	STATE=$1
	TOKEN=$2
	TOKEN=${TOKEN:-$DIGITALOCEAN_TOKEN}

	HOSTNAME=$(hostname)

	PRIVATE_IP_BASE=10.123.
	PRIVATE_DOMAIN=internal.example.com

tomgidden / lyap-ansi.py

Last active March 12, 2022 11:40

2D Lyapunov in Python using ANSI terminal colors

tomgidden / blinkt_mqtt.py

Created February 18, 2022 11:51

	#!/usr/bin/env python

	from sys import exit

	try:
	import paho.mqtt.client as mqtt
	except ImportError:
	exit("This example requires the paho-mqtt module\nInstall with: sudo pip install paho-mqtt")

	import blinkt

tomgidden / rename files by date

Created December 31, 2021 12:27

Rename files with 01Feb2020 format dates to 2020-02-01 for better sorting

rename 'use Time::Piece;s/(\d+)(\w{3})(20\d{2})/Time::Piece->strptime("$3-$2-$1", "%Y-%b-%d")->ymd/e' *.pdf

tomgidden / switch1.js

Last active July 24, 2021 14:12

Experimenting with functional(ish) switch-like statements in Javascript.

	// After writing this, I found
	// https://codeburst.io/alternative-to-javascripts-switch-statement-with-a-functional-twist-3f572787ba1c
	// which was almost identical to what I'd done.
	//
	// It's slow, though, but fine for small ones.

	/*

	const result = _switch(testValue)
	.case(predicateFn, resultFn)

tomgidden / pwdcolor.zsh

Last active July 18, 2021 15:06

macOS zsh change Terminal color based on current working directory

	PWDCOLORS_PATH=~/.pwdcolors
	PWDCOLOR=


	# macOS Terminal color change based on current PWD
	# by Tom Gidden <[email protected]>, July 2021
	#
	# This is a bit grotty and untested. Any improvements _very_ welcome.
	#
	# Ideally, Apple would bolt this functionality into Terminal.app,

tomgidden / Deskjet2710_1200dpi.ppd

Created December 15, 2020 16:31

macOS DeskJet 2710 PPD file hacked to allow for 1200dpi on matte coated paper

tomgidden / auto_master

Created September 24, 2020 09:05

automount setup for Catalina

	#
	# Automounter master map
	#
	+auto_master # Use directory service
	#/net -hosts -nobrowse,hidefromfinder,nosuid
	/home auto_home -nobrowse,hidefromfinder
	/Network/Servers -fstab
	/- -static
	/nfs auto_nfs -nobrowse,nosuid,soft,noowners,bg,intr,nfc

tomgidden / flattenUnflattenTree.js

Created August 28, 2020 00:16

Turns an Object-based tree into a list of tuples (dot-separated) and back. Basically a recursive Object.entries() and Object.fromEntries()

	// Alternatively, look at https://stackoverflow.com/questions/15690706/recursively-looping-through-an-object-to-build-a-property-list/53620876#53620876
	// and https://stackoverflow.com/questions/15690706/recursively-looping-through-an-object-to-build-a-property-list


	/* Converts a potentially deep tree into a list of tuples.
	* eg. {a:{b:{c:1,d:2}},e:{f:3},g:4} → [['a.b.c',1],['a.b.d',2],['e.f',3],['g',4]]
	*/
	const flattenTree = (tree) => {
	const recurse = (newentries, entries, path) => (
	entries.reduce( (a, [k,v]) => {

tomgidden / vino setup

Created July 22, 2020 16:40

Set up headless Vino on nVidia Jetson Nano, JetPack 4.4

	gsettings set org.gnome.Vino disable-background true
	gsettings set org.gnome.Vino prompt-enabled false
	gsettings set org.gnome.Vino authentication-methods "['vnc']"
	gsettings set org.gnome.Vino require-encryption false
	gsettings set org.gnome.Vino vnc-password `echo -n mypassword \| base64`

	## Isn't this meant to work?
	#nmcli connection show
	#dconf write /org/gnome/settings-daemon/plugins/sharing/vino-server/enabled-connections "['60db8415-f429-4dcf-88bf-5180daee1199','67359432-bfb9-3163-94c7-fa58a5aa4d49']"

Tom Gidden tomgidden