Start the Android Emulator and the iOS Simulator from the command line. This cli gives you a list of virtual devices available on your machine, with the most recently opened (from the cli) at the top.
yarn global add emus
or
npm install -g emus
$ emus --help
Start the Android Emulator and the iOS Simulator from the command line
Usage
$ emus [options]
Options
-a, --android Start the Android Emulator
-i, --ios Start the iOS Simulator
-s, --show-startup-options Show the startup options from the Android Emulator
Examples
$ emus
$ emus -a
$ emus -i
$ emus -as