Linux has this capability in recent kernel versions (3.x?). I don't know what the implementation is called (prctl?), but DragonflyBSD add this in procctl(2) in

Linux has this capability in recent kernel versions (3.x?). I don't know what the implementation is called (prctl?), but DragonflyBSD add this in procctl(2) in release 4.0. FreeBSD already had a procctl(2) and added the same functionality to be compatible. http://lists.dragonflybsd.org/pipermail/commits/2014-November/343844.html http://lists.dragonflybsd.org/pipermail/commits/2014-Novembe... So now FreeBSD and DragonflyBSD have plans to utilize this exactly like Illumos and build lightweight process supervision without the need for something as disruptive as systemd.