my $in_file = 'check.doc'; open my $in_fh, '<', $in_file or die "Could not open file $in_file: $! +"; my $out_file = 'output.txt'; open my $out_fh, '>', $out_file or die "Could not open file $out_file: + $!"; while ( my $line = <$in_fh> ) { chomp ($_); $line if ($_ =~ /^Customer ID: Yes/); print "$out_fh}"; } close $in_fh or die "Could not close file $in_file: $!"; close $out_fh or die "Could not close file $out_file: $!";