kill iOS Simulator from terminal

Question

I'm trying to terminate the iOS Simulator from the terminal console (needed for integrating automatic UI Testing in Jenkins),but every time I try the command:

killall SimulatorBridge

a prompt waiting for action gets displayed:

The problem is that the simulator doesn't get dismissed until an action on the prompt is taken. How to get rid of it?

Answer 1

The proper way to shutdown simulators is xcrun simctl shutdown all.

I don't recommend shutting down simulators by killing CoreSimulator.

Simulator.app is just a viewer (as of Xcode 9). It does not need to be launched and so does not need to be shut down either. It will respond to devices booting and shutting down automatically.

You can also hold down Option when quitting to detach from running simulators without shutting them down. Check the checkbox to make that the default behavior.

Similarly you can hold down Control when closing a window via File, Close to get a similar choice when closing a single simulator's window.