The issue for bash is also the issue for Makefiles. make is not part of the default macOS install - You need to install developer tools - which I suppose if yo

The issue for bash is also the issue for Makefiles. make is not part of the default macOS install - You need to install developer tools - which I suppose if you are a developer is OK. As for bash as it is an old verion on macOS you need to stick to a simpler subset - better write as sh. So sh seems to be the most general. Then consider Windows - ah ... You are going to have to install something. Shells don't run natively and how do you get snakefile or just. So python or make are the cross platform tools you have