PDA决定将这些字符串以主机变量还是参数标记符的形式发送。

PDA decides whether the strings can be sent as host variables or parameter markers.

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您还可以使用xargs的- l选项让命令将行当作参数看待，而不是默认的以单个空格分隔的标记。

You can also use the -l option of xargs to have it treat lines as arguments rather than the default of individual blank-delimited tokens.

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