The Perl script constructs a command pipeline that, if executed on the Linux command line, looks like this.
如果在Linux命令行中执行，perl脚本将构造一个命令管道，如下所示。
Note that the command line above is for a Linux machine, and that you may need to run tcpdump with root or administrator permissions.
请注意，上面的命令行适用于Linux机器，并且您可能需要拥有root权限或管理员权限才能运行tcpdump。
This was obviously done from a Windows command line, but the same should occur on Linux as well.
这显然是从Windows命令行完成的，不过在Linux上也应该出现相同的内容。
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