I have lines as follows in a file 

Today is amazing.nice day 
Today is amazing.nice but still I haven't done anything 
Yesterday was just a normal day 
Tomorrow probably will be amazing.new day

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What i want to accomplish : I want to be able to go through lines and match "(amazing.*)". If (amazing.*) is unique then put it in an array and also print that line if not ignore it. Basically, this is the result I am looking for. 

Today is amazing.nice day  
Tomorrow probably will be amazing.new day

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and so forth....

So far I have only written this much code. I just don't know where to go from here. Any direction on how to approach this would be very much appreciated. 

#!/usr/bin/perl -w
use strict;
while ( my $line = <> )
    {
        if ( $line =~ m/(\(amazing.+?\))/)
                        {
                        my $string="$1";
                        @allstrings = ($string);
                        }
   }

[download]

In reply to How to ignore lines that match certain string after it is matched for the first time within a same file by Ben328

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