In your first while(<$IN>) loop you run through each line of the file until the end - after that loop $IN is empty. You need to put some check to break out of the first loop once you have the info you require, something like: 
while (<$IN>) {
    if (/(^w.*)/) {
        push @lsl,$1;
    }
    elsif (/^Directories/) {
        last;
    }
}

[download]
In your second while(<$IN>) loop you print out the contents of %Hash for each found line - the first time %Hash will have only one item, the second two and so on. You need to take the print out of that loop. Also, everything is being added to the single @array and to the single @indexes, so the information of all keys will be printed for each key. Here is a different way to do it: 
sub GetDFSdata {
    #...
    #Get the list of file names and indexes
    my $name;
    while(<$IN>){
        chomp;
        next if /^operator/;
        #...etc.

        if (m/$start/) {
            $name = $1;
        } elsif (m/^record size:\s+\d+/) {
            $Hash{$name}{'record_size'} = $_;
        } elsif (m/^last record:\s+\d+/){
            $Hash{$name}{'last_record'} = $_;
        } elsif (m/^data byte count:\s+\d+/) {
            $Hash{$name}{'data_byte_count'} = $_;
        } elsif (m/^\s+index name:\s+(\w.*)/) {
            push(@{ $Hash{$name}{'indexes'} }, $1);
        }
    }
    close $IN;

    foreach my $key (keys %Hash) {
        print $OUT "File: $key<BR>\n";
        print $OUT "\tRecord Size: $Hash{$key}{'record_size'}<BR>\n";
        print $OUT "\tLast Record: $Hash{$key}{'last_record'}<BR>\n";
        print $OUT "\tData Byte Count: $Hash{$key}{'data_byte_count'}<
+BR>\n";
        my $str = join ',', @{ $Hash{$name}{'indexes'} };
        print $OUT "Index Names: $str\n";
    }
}

[download]

In reply to Re: Pulling specific data from a large text file by tangent
in thread Pulling specific data from a large text file by TStanley

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