Just clone project directory and make sure you have installed latest Ionic CLI
and while running ionic commands if you face “Error: spawn EACCES” error then run following command or use GUI to set read&write permission to project directory and all sub-directories,
$ chmod -R +rw mydir
now try running ionic commands and if still you face same error then run above command and ionic commands with sudo.
In the end I had to go with creating a new shell project on the mac and then copying across the config.xml file and the app, www and resources folders.
Not the end of the world, just wondered if I had missed something