Xcode 6 - Launch simulator from command line

Question

I want to launch iPhone simulator from command line.

until now I have been using the below command

/Applications/Xcode.app/Contents/Developer

Answer 1

To boot a simulator:

xcrun simctl boot "iPhone X"

It will boot as a headless mode. To make the simulator visible:

open -a Simulator

xcrun simctl boot is simpler than xcrun instruments -w. instruments requires the full device name.