抄来的一段代码，文本里有三行有“物理地址”这个字眼，我只需要第一行的，要怎样改？复制代码
- find "物理地址" ipconfig.txt >phyaddr.txt
复制代码
- find "物理地址" < ipconfig.txt > phyaddr.txt
- set /p v=<phyaddr.txt
- >phyaddr.txt echo,%v%
复制代码
- @(find "物理地址" |cmd /v /c set /p str=^&echo !str!)< ipconfig.txt >phyaddr.txt
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