Crear aplicación:

$ npx react-native init my-project
$ cd my-project
$ yarn start

Abrir emulador:

//https://developer.android.com/studio/run/emulator-commandline
//Ir a la carpeta del emulador de android
$ cd ~/Android/Sdk/emulator
//podemos listar nuestros dipositivos
$ ./emulator -list-avds
//Ejecutar el dispositivo
$ ./emulator -avd NOMBRE_DISPOSITIVO
//Otra opción para ejecutar el dispositivo
//Performs a cold boot, and saves the emulator state on exit.
$ ./emulator -avd NOMBRE_DISPOSITIVO -no-snapshot-load

Paquetes utiles:

$ yarn add @react-navigation/native react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context @react-native-community/masked-view @react-navigation/stack @react-navigation/bottom-tabs @react-navigation/drawer --save
$ yarn add react-native-elements --save
$ yarn add react-native-vector-icons --save
$ yarn add redux-saga --save
$ yarn add redux --save
$ yarn add react-redux --save
$ yarn add final-form react-final-form --save
$ yarn add apisauce --save 
$ yarn add jwt-decode --save
$ yarn add moment --save
$ yarn add prop-types --dev