I'm not sure what you mean by cut out the header, but here is a way to ignore it. Suppose header lines start with an octothorpe  #: 
open FILE, "<file.txt" or die "Couldn't open file.txt: $!";
while (<FILE>) {
   if (/^#/) { # ignore the header
   }
   else {
      # Do some processing
   }
}

[download]
If your goal is to remove the header from the file, the easiest approach is to copy from the original file to a new file, leaving out the header lines in the process.

-Mark

In reply to Re: Extracting Header by kvale
in thread Extracting Header by raj8

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