This is a tool for powerful automation of OS X. At its core, Hammerspoon is just a bridge between the operating system and a Lua scripting engine.
What gives Hammerspoon its power is a set of extensions that expose specific pieces of system functionality, to the user. With these, you can write Lua scripts to control many aspects of your OS X environment.
brew install hammerspoon --cask
Out of the box, Hammerspoon does nothing - you will need to create
~/.hammerspoon/init.lua and fill it with useful code. There are several resources which can help you:
Hammerspoon is a fork of Mjolnir by Steven Degutis. Mjolnir aims to be a very minimal application, with its extensions hosted externally and managed using a Lua package manager. We wanted to provide a more integrated experience.
Our intentions for Hammerspoon broadly fall into these categories: