Give Nix SU privileges I have a rooted device that runs our custom app in the system/priv-app folder. I would like to enable OTA updates, but would need to give SureMDM Nix app SU privileges. I am told the package name is com.nix. Does anyone know how to do this with ADB. I have root level privileges via ADB remount or SU commands.
Grant all required SuperSU Permissions  on one of the device and then connect it to desktop through USB and execute below commands .

Note: This commands will work only if adb has root access . 
          It will be good if you uncheck Re-authetication &amp; check Trust System User option also at the time of intial configuration .

adb root
adb shell
chmod 777 /data/data/eu.chainfire.supersu/shared_prefs/eu.chainfire.supersu_preferences.xml;
cat data/data/eu.chainfire.supersu/shared_prefs/eu.chainfire.supersu_preferences.xml &gt; /sdcard/eu.chainfire.supersu_preferences.xml ;
exit;
adb pull /sdcard/eu.chainfire.supersu_preferences.xml ;


For replicating above same SuperSU settings on other device, connect  device to desktop through usb and execute below commands .

adb push  ../eu.chainfire.supersu_preferences.xml /sdcard/
adb root
adb shell
chmod 777 /data/data/eu.chainfire.supersu/shared_prefs/eu.chainfire.supersu_preferences.xml;
cat /sdcard/eu.chainfire.supersu_preferences.xml &gt; data/data/eu.chainfire.supersu/shared_prefs/eu.chainfire.supersu_preferences.xml ;
am force-stop eu.chainfire.supersu;am start -a android.intent.action.MAIN -n eu.chainfire.supersu/.MainActivity ;