if you want to remove duplicates from a data file and the file has a header 
#!/usr/bin/perl

$ifile=$ARGV[0];
$ofile=$ARGV[1];

$header=`sed -n '1p' $ifile` ;
$data=`sed '1d' $ifile | sort -u` ;
open(my $fh, '>', $ofile) or die "Could not open file '$ofile' $!";
print $fh $header;
print $fh $data;

close $fh;
exit 0

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In reply to Re: Remove Duplicate Lines by Anonymous Monk
in thread Remove Duplicate Lines by dcb0127

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