print Dumper(\%entries),"\n";
which produces

     'kloesch' => {
                         '291' => {
                                    'gecos' => '',
                                    'host' => '/home/dbsmith/passwd.spsdbp.hpux',
                                    'gid' => '102'
                                  }
                       },
          'sapdp4' => {
                        '484' => {
                                   'gecos' => '',
                                   'host' => '/home/dbsmith/passwd.dudbdv02.aix',
                                   'gid' => '208'
                                 }
                      },

##</code><code>##


wlprdadm => uid #s, gid and gecos found on
        /home/dbsmith/passwd.eipdbmp1.hpux
        /home/dbsmith/passwd.carappp1.hpux

but of course being uid, gid and gecos actual values.

Finally, can a hash only contain keys like so: 

my %hash;
my array= (a..d);
$hash{$_}++ foreach @array;