You mean something like this?
use strict;
use warnings;
use Data::Dumper;

my $str = '"$a $a $a" ab bc "c$d e$f$" c$d "$a $a $a"';

my @uniq =
    keys %{{map {$_ => 1}($str=~m/("[^"]*\$[^"]*")/g)}};

print Dumper(\@uniq);

[download]
And the output is -
$VAR1 = [
          '"c$d e$f$"',
          '"$a $a $a"'
        ];

[download]
Note that I kept the regex simple by not trying to escape the string in the example above. If you want to include escaped strings, the regex becomes more complicated.
...
my $str = '"$a $a $a" ab bc "c$d \"e$f$" c$d "$a $a $a"';

my @uniq =
    keys %{{map {$_ => 1}
      ($str=~m/("(?:\\"|.)*?\$(?:\\"|.)*?")/g)}};
...

[download]
And the new output - 
$VAR1 = [
          '"c$d \\"e$f$"',
          '"$a $a $a"'
        ];

[download]

In reply to Re: Re: Re: parse for string, then print unique by Roger
in thread parse for string, then print unique by mhearse

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