I am trying to do the following grep for my output 


A> show chassis power | match "PEM|Online"

PEM 0:

PEM 1:

PEM 2:
  State:     Online

PEM 3:
  State:     Online

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In the above output am trying to find which PEM is online. For this , i thought i split using /n and find the state Online and go back to previous matching and check which PEM is online . I did not complete the code as am stuck how to go back 


    $rh->cmd('show chassis power | match "PEM|Online"');
    my $output = $rh->get_response;
    my @outputlist = split /\n+/, $output;
        foreach (0..$#outputlist) {
             if ($outputlist[$_] =~/ State:\s\w{4}Online/) {
                if($outputlist[$_ _1] =~ /PEM 1/
}
}

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In reply to Regular expression query by Anonymous Monk

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