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  1. or download this
    $ perl -MO=Deparse -e '$$hash{"key1"}{"$var2"} = $value'
$hash->{'key1'}{"$var2"} = $value;
...
$ perl -MO=Deparse -e '$$hash->{"key1"}->{"$var2"} = $value'
$$hash->{'key1'}{"$var2"} = $value;
-e syntax OK
  2. or download this
    $ perl -MO=Deparse -e '$hash->$*->{"key1"}{"$var2"} = $value'
$$hash->{'key1'}{"$var2"} = $value;
-e syntax OK
  3. or download this
    $ perl -MO=Deparse -e '%$hash{"key1"}->%*'
%{%$hash{'key1'}};
-e syntax OK
  4. or download this
    $ perl -MO=Deparse -e '%{ $hash{"key1"} }'
%{$hash{'key1'};};
...
$ perl -MO=Deparse -e '$hash{"key1"}->%*'
%{$hash{'key1'}};
-e syntax OK