# rsync ./src ./copy

if [ "$?" -eq "0" ]; then
  # rsync succeeded, 2nd to last line of log has some data amount moved for a message
  MESSAGE=$(tail $logFile -n 2 | head -n 1)
else
  # rsync failed, take last line and make it the message
  MESSAGE=$(tail $logFile -n 1)
fi

echo "rsync result: $MESSAGE"