省略grep中的文件名

我正在从多个文件中提取一个字符串，但是一个不希望有的副作用是文件名在输出之前添加了前缀。如何仅使用grep抑制文件名输出？

  $ grep -i lp lpNet* 
    lpNet:This was printed via the internet using the lp command.
    lpNet:I believe lp doesnt care what the device is. 
    lpNet1:This was printed via the internet using the lp command.
    lpNet1:I believe lp doesnt care what the device is. 
    lpNet2:This was printed via the internet using the lp command.
    lpNet2:I believe lp doesnt care what the device is. 
    lpNet3:This was printed via the internet using the lp command.
    lpNet3:I believe lp doesnt care what the device is.

我已经使用cat lpNet *解决了该问题。grep lp我只是想知道是否有更有效的途径来达到相同的效果

— 00
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默认行为是在给定多个文件参数时打印文件名-若要取消显示，可以添加-h或--no-filename选项

Output Line Prefix Control在grep手册页的部分中：

   -h, --no-filename
          Suppress the prefixing of file names on  output.   This  is  the
          default  when there is only one file (or only standard input) to
          search.

— 钢铁司机
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