a-ludi’s gists

a-ludi / version_matches.sh

Created November 10, 2021 10:21

Compare a version against a set of match clauses

	# Usage: version_matches <version> <clause>
	#
	# Params:
	# <version> Dot-separated version specifier, e.g. 2.4.32
	# <clause> Match-clause according to grammer (below), e.g. >=1.0.0&<2.0.0
	#
	# Grammar:
	#
	# <version> ::= <uint> \| <uint> "." <version>
	# <version_pred> ::= <version> \| <op> <version>

a-ludi / retry

Last active February 10, 2020 09:41

retry – retry a command until it succeeds

	#!/bin/bash

	# Unofficial Bash Strict Mode (http://redsymbol.net/articles/unofficial-bash-strict-mode/)
	set -euo pipefail
	IFS=$'\n\t'
	PROG="$(basename "$0")"
	VERSION="0.1.0"
	UPSTREAM_URL='https://gist.github.com/a-ludi/326a58b5a6b85c9c523833f614090438'

a-ludi / hull_minkowski_bug.scad

Last active September 11, 2017 08:59

OpenSCAD: minkowski on non-convex objects produces geometry errors

	// with errors due to minkowski with non-convex objects
	translate([8, 0, 0])
	difference() {
	cube([15, 15, 1], center=true);

	minkowski() {
	for (i = [-1 : 1])
	for (j = [-1 : 1])
	translate(5*[i, j, 0])
	cylinder(10, r=1, center=true);

a-ludi / expectStruture.js

Created August 2, 2016 12:32

	function expectStruture(object, structure, breadcrumbs) {
	var subStructure;

	breadcrumbs = breadcrumbs \|\| [];
	structure = {
	title: true,
	description: true,
	gallery: [{}],
	eventTypeMood: true,
	eventTypeLocation: true,

a-ludi / db.php

Last active August 29, 2015 14:27

This is an extension to the default `wpdb` class providing some debugging facilities as well as `ez_*` family of functions for easy handling of MySQL queries.

	<?php
	/* Copyright © 2015 Arne Ludwig <[email protected]>
	*
	* This program is free software: you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the Free
	* Software Foundation, either version 3 of the License, or (at your option)
	* any later version.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

a-ludi / gpgedit

Last active February 1, 2025 07:09

gpgedit lets you edit a gpg-encrypted file without much fuzz -- similar to sudoedit.

	#!/usr/bin/python

	# gpgedit lets you edit a gpg-encrypted file without much fuzz -- similar to
	# sudoedit.
	#
	# For this to achieve, gpgedit uses gpg to decrypt your file and save the
	# plain text in a temporary file under /dev/shm (tmpfs) which will open in
	# an editor. After the changes have been saved and the editor closed your
	# plain text will be encrypted and written to the original file.
	#

a-ludi / yars

Last active July 10, 2017 07:51

Yet Another rsync Script

	#!/bin/bash
	# This script makes incremental or full backups of a given folder using rsync.
	# Copyright (C) 2013 Arne Ludwig <[email protected]>
	#
	# This program is free software: you can redistribute it and/or modify it under the terms of the
	# GNU General Public License as published by the Free Software Foundation, either version 3 of
	# the License, or (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
	# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See

a-ludi / function_family_examples.gnu

Created August 22, 2013 13:47

Potting of Families of Curves and Palettes =============================== Further reading under http://wp.me/p31qg7-F

	#!/usr/bin/gnuplot

	set terminal pngcairo enhanced color \
	font "cmr10,10" fontscale 1.3 \
	size 890, 682

	# Set the gaussian rgb-palette
	G(x) = 0.855 * exp(-(x - 0.5)**2/0.25)
	B(x) = 1.056 * exp(-x**2/0.49)
	R(x) = B(1.0 - x)

a-ludi / hide_todonotes

Last active December 21, 2015 06:49

This command adds two complemantary options `hide` and `show` to the `todonotes` package. If `hide` is given then the todo note itself will not be rendered, but a index entry will be created. **Usage:** while this is not part of the `todonote` package you can insert this snippet in your preample *after* the package has been loaded.

	\makeatletter
	\if@todonotes@disabled%
	\else
	\newif\if@todonotes@localhide\@todonotes@localhidefalse%
	\define@key{todonotes}{hide}[]{\@todonotes@localhidetrue}%
	\define@key{todonotes}{show}[]{\@todonotes@localhidefalse}%

	\renewcommand{\@todo}[2][]{%
	\if@todonotes@prependcaptionglobal%
	\@todonotes@prependcaptiontrue%

Arne a-ludi