The first three echo commands create the file biz_rules.txt, populating it with three rules.

前三行echo命令创建biz_rules.txt文件，并向其中写入三条规则。

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The first three echo commands create the file biz_rules.txt, populating it with three rules.

前三行echo命令创建biz_rules.txt文件，并向其中写入三条规则。

youdao