illumos has an IPC mechanism called doors. At a high level, doors allow a process to expose a procedure that another process can call. The client calls into the door, the kernel transfers control to a server thread in the server process, and the server returns a response back to the client. In practice, it feels like making a function call that magically goes across process boundaries.

I have known about doors for a while mostly because they show up all over the system. For example, name resolution and user lookups, among other things, may use doors to talk to nscd. I thought it would be fun to write a small example program to see how the API works and use dtrace to spy on our program a bit.

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It’s been in the works for over a year now but The Complete Bash Scripting Course is here!

Learn the Bash Shell and master beginner all the way up to advanced Bash scripting techniques. 7+ Hours of content, 60+ Sections, all free.

Check out the YouTube video above or check out the courses website here:

https://course.ysap.sh

This post will guide you through installing isc-dhcpd on OmniOS inside a zone (software virtualized container).

Configuring the system

To get started, first install zadm on OmniOS inside the global zone. This tool makes creating and managing zones simple and is reminiscent of the vmadm command on SmartOS.

Install zadm:

pkg install zadm

I personally use this config for zadm (shoutouts to @papertigers for this), but feel free to customize this as you like.

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Check it out, I made an appearance on the Ship It! podcast! It was a great time chatting with Justin and Autumn and I hope this will kick start my podcast-era 😎.

Dave Eddy has learned systems programming the traditional way with books and man pages. Now he’s sharing what he’s learned, starting with bash.

Ship It! 124: You suck at programming – Listen on Changelog.com

I released my latest album on May 17th, 2024!

My 6th album (5th full-length). Nightfall consists of songs written mostly between 2021 and 2024 with a few notable exceptions capturing the feeling of a long night with an eventual dawn at the end.

Download or stream Nightfall.

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In late 2022 I started a new series on TikTok called You Suck at Programming. In it I mostly talk about really cool Bash and Unix tricks and pitfalls and just general advice.

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This guide will show how to install Void Linux as a guest on OmniOS using hardware virtualization with bhyve.

Configure the system

To get started, first install zadm on OmniOS inside the global zone. This tool makes creating and managing zones simple and is reminiscent of the vmadm command on SmartOS.

Install zadm:

pkg install zadm
pkg install zones/brand/bhyve

I personally use this config for zadm (shoutouts to @papertigers for this), but feel free to customize this as you like.

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I wrote a computer program to generate piano music on the command line. The generation is done with a simple algorithm to create patterns in MIDI format, which is then imported into my DAW to process the data and turn it into music. There is no AI or Machine Learning in this algorithm - the music is programmatically generated and this video covers the algorithm that I created in detail.

I Made a Computer Program to Generate Piano Music

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How to install Plex on Void

Download plex-install-manager from:

https://github.com/bahamas10/plex-install-manager

Install deps:

xbps-install -S binutils tar curl xz

Create user and directories needed:

useradd -s /bin/false -d /var/empty _plex
mkdir /opt/plex /opt/plex/src /opt/plex/data
chown _plex:_plex /opt/plex/data

Install Plex:

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I released my latest album on June 1st, 2021!

My 5th album (4th full-length). Inspired consists of songs mostly written during 2020 and 2021 - when I decided to quit my job and focus more on music creation. It’s comprised of piano and instrumental tracks.

Download or stream Inspired.

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