Get Android OS version of device connected via ADB
I know , you already got the correct solution , & here is my solution only for additional information.
You will get every details by cat
ing the /system/build.prop
file like
adb shell cat /system/build.prop
Here is collection of adb commands
For all properties:
adb shell getprop
To get Android version you can use:
adb shell getprop ro.build.version.release
to get API level:
adb shell getprop ro.build.version.sdk
You can see all available properties with this command:
adb shell getprop