I've been using fswatch for a project that supports both linux and darwin. Here's an example from a Makefile of how I use it to re-run tests on file change:

I've been using fswatch for a project that supports both linux and darwin. Here's an example from a Makefile of how I use it to re-run tests on file change: test-watch: make --no-print-directory test || : fswatch --event Updated -o test/*.c test/*.h src/ | xargs -n1 -I{} make --no-print-directory test