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  1. or download this
    my $var = 'blue';

my $string1 = "the sky is $var\n";
my $string2 = qq|the sky is $var\n|;
  2. or download this
    my $var = 'blue';

my $string1 = "the \"sky\" is $var\n";
my $string2 = qq|the "sky" is $var\n|;