macOS on Fabian van Steen

Trying out Omarchy — a .NET developer on Linux

Sat, 12 Sep 2026 00:00:00 +0000

It started with a laptop nobody wanted anymore. A 2017 MacBook Air, Intel, 8 GB of RAM, sitting in my office running an old version of macOS. My son had been using it, and had mostly stopped — because it had become the kind of slow where you think twice before opening a browser tab.

So I wiped it and put Omarchy on it: “Beautiful, fun & agentic Linux by DHH.”

How to Flush DNS Cache in MacOS Catalina & Big Sur

Sat, 24 Oct 2020 00:00:00 +0000

Use the following commands to flush your DNS cache in MacOS. The commands are slightly different depending on your version of MacOS. First, make sure you’ve opened up your terminal on your computer.

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

How to install homebrew on MacOS

Sat, 29 Jun 2019 00:00:00 +0000

What is HomeBrew

Homebrew is the missing package manager for macOS. You can use Homebrew to install command line packages on a Mac, provided someone has written a formulae, which is a simple Ruby script that walks through the process for installing all the little bits required for a piece of software.

Installing HomeBrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Once the installation has finished, execute the following command to check your HomeBrew version.