capscreen is a shell script for screen recording on OpenBSD using ffmpeg(1).  It captures the screen and microphone, and optionally overlays a webcam video feed in the top-right corner.

This Perl tutorial assumes the prospective Perl hacker has no prior knowledge of programming languages, but is able to differentiate between a computer and a toaster.

Using remind's RUN directive and echo to pipe reminders to commands.

When writing documents in vim, it’s nice to have a quick way of compiling them into the desired formats. In my case, I compile my groff files into pdfs while at the same time having a preview in zathura. Zathura automatically detects changes in pdfs and reloads accordingly, which is nice.

Run arbitrary commands when files change

This tutorial is written to help people understand some of the basics of shell script programming (aka shell scripting), and hopefully to introduce some of the possibilities of simple but powerful programming available under the Bourne shell. As such, it has been written as a basis for one-on-one or group tutorials and exercises, and as a reference for subsequent use.

find bugs in your shell scripts