Hi,
If I am not wrong then follow this code
my $filename = 'yourfilename.txt';
open FILE, "$filename" || die "cant open file for read";
@data = <FILE>;
close FILE;
for my $line (0..$#data) {
# execute process method -- do your operation stuffs here.
&process($data[$line]);
# if you want to delete, make the line with null value;
$data[$line] = "";
}
$entirefile = join "\n", @data;
open OUT, "outfile.txt" || die "cant open file for write";
print OUT $entirefile;
close OUT;
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