[icapsper@casperbox .wjohnson]$ ./get_df.just_capacity
$VAR1 = {};
Use of uninitialized value in substitution (s///) at ./get_df.just_capacity line 25.
Use of uninitialized value in division (/) at ./get_df.just_capacity line 26.
Use of uninitialized value in hash element at ./get_df.just_capacity line 18.
$VAR1 = {
          '' => {
                  'free' => undef,
                  'mount' => undef,
                  'used' => undef,
                  'name' => '/dev/mapper/VolGroup00-LogVol00',
                  'capacity' => '0',
                  'size' => undef
                }
        };