Oops, I was not logged in when I posted this earlier. I have input in the following format "xx.xx.xx.xx 6 1 (ip number1 number2) and I cannot determine how to sort to sort it desending by the 3rd element. I found some code on Friday that almost worked but now I cant find it on perlmonks today. I have tried this but it does not print $a->2 when I try to print the values: 
foreach ( CMP <INPUT> ){                                          
       print $_; 
}

sub CMP {  
        my($a0) = $a -> [2];                      
        my($b0) = $b -> [2];                      
        $b0 <=> $a0
}

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This will print the data without a sort. 
while (<INPUT>){
     split ( $ip, $num1, $num2);
     printf "%18s %10s %10s\n", $ip, $num1, $num2 ;
}

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The code I found on Friday was something like this but I could not get it to work: 
@sorted = map { $a->[2] cmp $b->[2]
    || $a->[2] <=> $b->[2]
    chomp; [split]
    <INPUT>}

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Can someone please help? I have spent 3 hours trying to do something so simple. Kev

In reply to sorting and array by [2] by kevyt

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