The job identifier can contain any non-blank character except slashes (/).

作业标识符可以包含除了斜线（/）之外的所有非空白字符。

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Validation of the fields in the product catalog (positive price, non-blank title and description).

确认产品目录中的字段(正数价格，非空的标题和描述)。

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Another option to watch out for is -b, which tells sort to ignore blank characters (Spaces, tabs, etc.) and treat the first non-blank character on the line as the start of the sort key.

另一个要关注的选项是- b，它告知sort忽略空白字符(空格、跳格等等)并将行中的第一个非空白字符当做是排序键的开始。

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