trigger reruns a command on keystroke

Conveniently rerun any shell script on keystroke. It's useful for running build commands on demand when programming, especially when you don't have a file watcher or the file watcher is buggy or uses too much CPU.

trigger tries extra hard to force kill the subprocess group to prevent the accumulation of zombie processes.

Installation

go install github.com/chrismwendt/trigger@latest

Register a keybinding in your desktop automation tool of choice. For Hammerspoon:

hs.hotkey.bind({"cmd"}, "'", function()
  hs.execute("/usr/local/bin/timeout 1s curl localhost:7416")
end)

Usage

Then run:

$ trigger go run main.go
Running go run main.go
hello, world
Done

While it's is running, hit Cmd+' to run go run main.go again:

$ trigger go run main.go
Running go run main.go
hello, world
Done
Running go run main.go
hello, world
Done