To get summary information, in other words, the total space used by a specific user, you can use awk to total the information and print out the final value.

要获得摘要信息，换句话说，即某个特定用户所使用的总空间，您可以使用awk对该信息进行总计，并打印出最后的值。

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Thus, it enables to monitor the total flows of goods and services produced, as well as value added, starting from the initial production stage to the final use stage.

UNESCO: Belarus: Report: Part I: Descriptive Section