flutter:tldr:5ef4a

The command flutter run -d all is used to run a Flutter application on all available devices or emulators.

• flutter run is the command used to run a Flutter application.
• -d is the option used to specify the target device or emulator to run the application on.
• all is the value passed to the -d option, which means to run the application on all devices or emulators.

When executing this command, Flutter will attempt to run the application on all devices and emulators connected to the machine. This is useful when you want to test your application simultaneously on multiple devices or emulators.