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  1. or download this
    print "This hash holds ". scalar keys %somehash . " keys\n";
    
  2. or download this
    perl -e 'print "How sweet does a rose smell? "; chomp ($n = <STDIN>); 
    +$rose = "smells sweet to degree $n";*other_name = *rose;print "$other
    +_name\n"'