Possible solutions:

Command line: 

perl -ne 'BEGIN { our $offset=-1 } $offset=2 if /^LUN 40\s*$/; print i
+f !$offset--;' 743702.dat

[download]

Script: 

use strict;

my $trigger = -1;
while (<>) {
   $trigger = $. + 2 if /^LUN 40\s*$/;
   print if $. == $trigger;
}

[download]
But doesn't work if LUN 40 re-triggers (e.g. two consecutive LUN 40 lines). That might need a list to match against (e.g. using grep).

In reply to Re: trying to do a parse based on starting position. by Perlbotics
in thread trying to do a parse based on starting position. by luckenbach

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