19 Sep 2016

Automate your macOS with Hammerspoon

Posted on September 19, 2016

I’ve been using macOS for about 8 years and as a dual monitor user there was always a very annoying problem which I could never find a perfect solution for. Every time I connected or disconnected my second monitor from my MacBook, macOS messed up the window positions.

Then I discovered Hammerspoon and was not only able to fix this problem but also able to automate a lot of cool things and I was also able to replace HardwareGrowler with it.

My configuration is a available at github and provides the following features:

  • Notifications for hardware events (USB, battery, WiFi, volumes)
  • Window layout for single and dual monitor setups
  • Connect or disconnect Bluetooth when the second monitor is plugged or unplugged (blueutil must be installed)
  • growlnotify replacement: hammerspoon://notify?title=...&subtitle=...&info=...
  • Open new Chrome window for development: hammerspoon://devopen?url=http://....

This configuration is work in progress and there will be more features in the future.


git clone https://github.com/code2k/.hammerspoon.git ~/.hammerspoon
cd ~/.hammerspoon
cp example-config.lua config.lua

Then edit config.lua as needed.