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

For xcode 7:

open /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app --args -CurrentDeviceUDID

Get your simulator udid's from xcrun simctl list