how to find devices nativescript
$ tns device [<Command>]
<Command> extends the device command. You can set the following values for this argument:
android - Lists all recognized connected Android physical and running Android virtual devices.
ios - Lists all recognized connected iOS devices.
log - Opens the device log stream for a selected connected device.
list-applications - Lists the installed applications on all connected Android or iOS devices.
run - Runs the selected application on a connected Android or iOS device.