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  1. or download this
    $ perl -le 'main->{x} = 1; print $main->{x}'
  2. or download this
    $ perl -lwe 'main->{x} = 1; print $main{x}'
1
  3. or download this
    $ perl -Mstrict -lwe 'main->{x} = 1; print $main{x}'
Can't use bareword ("main") as a HASH ref while "strict refs" in use a
+t -e line 1.