# flutter

> Google's free, open source, and cross-platform mobile app SDK.
> More information: <https://github.com/flutter/flutter/wiki/The-flutter-tool>.

- Check the Flutter version:

`flutter --version`

- Display general help:

`flutter help`

- Display help about a specific command:

`flutter help {{command}}`

- Execute a Flutter command:

`flutter {{command}}`

- Show information about the installed tooling:

`flutter doctor`

- List or change Flutter channel:

`flutter channel {{stable|beta|dev|master}}`

- Run Flutter on all started emulators and connected devices:

`flutter run -d all`