I'm trying to parse a file for strings which start with a dollar sign. I want to push those into an array. I then want to print only the unique values from that array. Why isn't this working? 
#!/bin/perl
while (<>) {
   chomp;
   $_ =~ (/\b^\$\b/);
   push @in, $1;
}

$prev = 'nonesuch';
@iner = grep($_ ne $prev && ($prev = $_), @in);

foreach $value (@iner) {
   print $value,"\n";
}

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In reply to parse for string, then print unique by mhearse

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