Hi Monks, I need suggestions on the fastest way to do this: I have 3 directories with log files in them. All log files have the following pattern.

< block>

< id> xyz < /id>

< url> foo.com < /url>

..

< response> xyz < /response>

< /block>

< block>

..

The task is to get the id if the url is foo.com from logs of first directory , search for that id in all the directories(including first one) print the responses from the corresponding blocks into a saparate file. 
#getting the ids from first directory
sub doFile($) {
        my ($fn) =@_;
        chomp($fn);
        print "opening $fn\n";
        my $fh = IO::File->new($fn, 'r');
        my @msgLines;
      if( defined $fh){
        while(my $l = <$fh>) {
                push @msgLines, $l;
                if($l =~ m"</msg>\s*\$") {
                        #my $msg = join('', @msgLines);
                        my $id;
                        if(grep{ m"http://.*foo.com" } @msgLines) {
                              #store the @msglines into an array, this
+ array can serve as source for searching for reponses from first dire
+ctory, need to do something similar for the rest of directories.     
                                $id = grep { $_ =~ m"<Id>(\d+)</Id>"; 
+}
                         #@msgLines;
                          #      $id =~ m"<Id>(\d+)</Id>";
                                push @IDs, $id;
                                }
                        @msgLines = ();
                                          }
                           }
                       }
      else{
            die "Cannot open file $!\n";}
}
my @firstdir=@{$logfiles[0]};
my $path=$logdirs[0];
foreach (@firstdir) {
   my $curpath=sprintf($path.'/'.$_);
    print"In foreach trying to open $path\n";
        doFile($curpath);
}

[download]
The log files are huge, so zipping them into a single file is not possible(out of disk space). Any perl modules that can help me with this task?

In reply to Best way to search through blocks of data by baski
in thread Searching a gzip file by baski

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