Here's another way: 
    perl -ne 'print if $prev; $prev = /energy/' file

    # Or with a counter

    perl -ne 'print ++$i, $_ if $prev; $prev = /energy/' file

[download]
Your second solution could have been written as follows:     perl -ne 'print ++$i . <> if /energy/' filename

--
John.

In reply to Re: A new question from the front line by jmcnamara
in thread A new question from the front line by bronto

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