Windows firewall rule to block Internet but allow LAN

This post covers how to configure the Windows firewall to block Internet access for a given program, but still allow it LAN access.

Play LAN-only games together over the Internet with WireGuard

This post describes how to configure WireGuard, an open-source point-to-point tunnel, to play LAN-only games together over the Internet. This includes games that never had Internet-based but only LAN-based match-making in the first place (mostly older games) - but also games that by design would have had both, but for which the Internet-based match-making servers sadly are no longer active.

pdfcrop: automatically remove margins from pdf files on Linux

Want an easy way to get rid of margins in a pdf file on Linux? For example, when embedding the pdf file as figure somewhere? Then pdfcrop might be the tool for you. It is an extremely easy (probably the easiest possible for such a tool), quick, and reliable tool to sove your problem.

Markdown pandoc slides: easy and quick ways to create slides from markdown with pandoc

I’m frequently in the situation of being required to quickly create a handful of slides on the go/on the road. The slides are typically used at a quick meeting where I benefit from some supporting slides. Because in the end I can use my laptop for the slides, converting any type of slide source information … Continue reading Markdown pandoc slides: easy and quick ways to create slides from markdown with pandoc →

MarkdownPresenter: create slides from markdown in a quick and easy way

MarkdownPresenter is a very simplistic markdown presentation editor and viewer that uses markdown to create pdf slides. Especially its simplicity makes it a good choice for quickly creating some slides - for which other tools would easily be too bloated. This posts focuses on the basics of using MarkdownPresenter.

git-difftool: an easy way to highlight changes in git-managed text files

git ships a nice little tool to compare two different versions of the same textfile and highlight its differences: git difftool. It basically does two things for you. a) checkout the versions of the file to compare. b) fire up your diff program to show you/highlight the differences. This posts explains how git difftool can quickly be configured and how it's used.

Reduce pdf file size with GhostScript pdf compression under Linux/Unix

We frequently need to mail pdf files that are too big for regular mail services, such as a 40MB pdf file with a maximum 10MB send restriction. In such situations quick and effective pdf compression comes in handy that does not reduce the quality to a level of the file becoming unusable.

Redshift: protect your eyes during long nights in front of your PC

Looking at our screens during long night sessions can harm your eyes and cause e.g. sleeplessness/insomnia. Dimming monitors and reducing the amount of blue light during night sessions - e.g. using redshift on Linux - is a good thing.

git-latexdiff errors? Workaround: using latexdiff manually allows fixing broken things

In certain cases git-latexdiff might terminate with errors instead of producing a visual diff file. For example, it might struggle with broken latex code, broken figures, certain usage of subfiles, etc. In such cases, it might help to manually do what git-latexdiff would do fully automatically for you. This post is provides a simple step-by-step explanation of how you could achieve visual highlighting even with broken Latex files.

git latexdiff usage: visually highlight changes in version controlled Latex files

git latexdiff accounts for checking out the different version of a Latex file as well as comparing them with latexdiff in a single command: you only need to specify which latex file and versions should be used for the comparison.