Android 我想通过adb启用备份

我是android的新手。我想执行“使用SDK工具/路径中的以下命令启用备份：adb shell bmgr enable true”

请帮我怎么做

我在cmd bt中试过，它给了我这个错误

C:\Program Files\Android\Android sdk\tools>adb外壳 “adb”未被识别为内部或外部命令，

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可操作的程序或批处理文件

//您可以在工具文件夹中找到一个adb\u has\u moved.txt

The adb tool has moved to platform-tools/

If you don't see this directory in your SDK,
launch the SDK and AVD Manager (execute the android tool)
and install "Android SDK Platform-tools"

Please also update your PATH environment variable to
include the platform-tools/ directory, so you can
execute adb from any location.