处理文本文件通常包括读取信息单元(通常叫做字符或行)，然后对刚读取的单元执行适当操作。

Processing a text file often consists of sequentially reading a unit of information (typically either a character or a line) and doing something in response to the unit you've just read.

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在其它情况下，即使文本文件不是完全无状态，数据也只有有限的上下文(例如，操作取决于不比行号更多的信息)。

In other cases, even though the text file is not completely stateless, the data has a limited context (for example, the action might not depend on much more than the line number).

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为便于操作和编辑，您可以将想要归档的文件和目录放进一个文本文件中，然后在命令行通过- T开关引用这个文本文件。

For ease of operation and editing, you can put the files and directories that you want to archive in a text file, which you reference with the -t switch.

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