初始化扩展存储过程期间，未接收到参数长度。

The parameter length was not received during initialization of the extended stored procedure.

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即使在这样一小段脚本中，您也可以找到一些参数扩展，包括长度、子字符串、模式匹配和模式替换。

You'll recognize several parameter expansions, including length, substring, pattern matching, and pattern replacement in even this short piece of script.

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命令参数：参数的个数及其长度是与具体命令相关的。

Command parameters: the number of parameters and their length is command specific.

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