lucaswerkmeister

# /etc/systemd/system/opendkim.service
[Unit]
Description=OpenDKIM email sender authentication system
Documentation=man:opendkim(8) man:opendkim.conf(5) http://www.opendkim.org/
After=network.target nss-lookup.target

[Service]
RuntimeDirectory=opendkim
Type=forking
PIDFile=/run/opendkim/opendkim.pid

lucaswerkmeister

#!/bin/bash

# source: https://www.gnupg.org/documentation/manuals/gpgme/Hash-Algorithms.html
digests=(
    nil
    MD5
    SHA1
    RMD160
    MD2
    TIGER

lucaswerkmeister

Introducing ceylond and cformat

Good ``timeofday`` everyone! It is with great pleasure that I announce the release of four new Ceylon modules, grouped together as the [ceylond] project, as well as a companion program, [cformat]. This email introduces the motivation behind them, how they work, and what they do in detail.

TL;DR

lucaswerkmeister

Make your Arch Linux device emit ownership information on boot

Scenario: You’ve lost your device. Actually Honest Achmed finds it, and would like to return it to you. However, the label that you had carefully attached to your device was ripped off. How does Achmed know who to return the device to? He attempts to boot the device, but since you use full-disk encryption (you do use full-disk encryption, don’t you?), that doesn’t get him any further than the decryption password prompt. Fortunately, you have arranged for a simple message to be printed before that prompt,

lucaswerkmeister

# /etc/systemd/system/opendmarc.service
[Unit]
Description=OpenDMARC email validation system
Documentation=man:opendmarc(8) man:opendmarc.conf(5) man:opendmarc-import(8) man:opendmarc-reports(8) http://www.trusteddomain.org/opendmarc/
After=network.target nss-lookup.target

[Service]
RuntimeDirectory=opendmarc
Type=forking
PIDFile=/run/opendmarc/opendmarc.pid

lucaswerkmeister

journalctl -u postfix -o json | jq -r 'select(.MESSAGE | contains("to=")) | .["_SOURCE_REALTIME_TIMESTAMP"]' | awk '{sec=int($1/(1000*1000)); print sec, int(sec/(60*60*24))}' | uniq -f 1 -c | sort -rn | head | while read count stamp day; do printf '%s\t%s\n' "$count" "$(date -Idate -d @$stamp)"; done

lucaswerkmeister

\documentclass{article}
\usepackage[utf8]{inputenc}

\DeclareUnicodeCharacter{3BB}{\lambda} % λ

\newcommand{\var}[1]{\mathtt{#1}}

\let\qm=?
\catcode`?=13
\def?{%

lucaswerkmeister

% colored underline, with Beamer overlay support                                                                                                                                                                                                                                                                                                                                                                                         
% usage: \cul{x} or \cul[blue]{x} or \cul<2->{x} or \cul<2->[blue]{x}                                                                                                                                                                                                                                                                                                                                                                    
\newcommand<>{\cul}[2][red]{%                                                                                                                                               

lucaswerkmeister

import ceylon.language.meta.model {
    ClassOrInterface
}

shared interface Enumeration<Element> of Element
        given Element satisfies Enumeration<Element> {
    shared static Element? byName(String name) {
        assert (is ClassOrInterface<Element> coi = `Element`);
        return coi.caseValues.find((element) => name == element.name);
    }

lucaswerkmeister

branch=... # the branch you want to turn into an orphan branch
base=master # the branch which $branch is based on and shouldn’t be anymore
firstCommit=... # the first commit on $branch that’s not on $base

# rename $branch to $branch-bak
git checkout $branch
git checkout -b $branch-bak
git branch -d $branch

# new orphan $branch