bh_perl, You have not shown your exact requirement. So by assuming your required output as:

<name>00 00 0D</name>
<mobile>123455</mobile>

<name>00 00 30</name>
<mobile>6575758</mobile>
[download]

Here is one way to achieve this.

use Getopt::Std;
use vars qw /%opt/;

my %fldinfo;
my $options = 'h:i:o:';

getopts("$options", \%opt) or usage();

sub usage {
        print "Usage: $0 -[h] -i <input_file>\n";

        if ($opt{h}) {
                print "   -h : help\n";
                print "   -i : input value to be created\n";
                print "   -o : output-file\n";
        }
}

sub chk_info {
        while (my ($fldname, $fldvalues) = each (%fldinfo)) {
                print "<name>$fldname</name>\n<mobile>$fldvalues</mobi
+le>\n\n";
        }
}

main {
        if ($opt{h}) {
                usage();
        }

        open(DATA, "$opt{i}");
        
        my $data = do {local $/, <DATA>};                             
+           
                
        while ($data =~ /name\:([^\n]*)\nmobile\:([^\n]*)\n?/g)
        {
                my $fldname = $1; $fldvalue = $2;         
         
           $fldinfo{$fldname} = $fldvalue;
        }
      
        close(DATA);

        chk_info();

        exit();
}
[download]