Detect admin user for usb backups

src/freedombone

@@ -2822,14 +2822,17 @@ function create_backup_script {
 
   echo '#!/bin/bash' > /usr/bin/$BACKUP_SCRIPT_NAME
   echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo "COMPLETION_FILE=$COMPLETION_FILE" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "USB_DRIVE=$USB_DRIVE" >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'if [ $1 ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '  USB_DRIVE=/dev/${1}1' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo "USB_MOUNT=$USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
-  echo "ADMIN_USERNAME=$MY_USERNAME" >> /usr/bin/$BACKUP_SCRIPT_NAME
-  echo "MY_USERNAME=$MY_USERNAME" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo -n 'ADMIN_USERNAME=$(cat $COMPLETION_FILE | grep "Admin user" | ' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo "awk -F ':' '{print $2}')" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo 'MY_USERNAME=$ADMIN_USERNAME' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'if [ $2 ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '  MY_USERNAME=$2' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME