这个程序使用了集合和一个参数数据段。

The program used summation over sets and a parameters data section.

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由于shmseg内核参数被设得太低，有些共享内存段不能适当地分配。

Because SHMSEG kernel parameter is set too low, some Shared memory segments could not be allocated properly.

youdao

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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