You could use the flip-flop operator to skip lines which are not between the %%Atom Coords and %%End Frame markers. Maybe something like this? 

#!/usr/bin/perl -w
use strict;

while (<DATA>)
{
  
  #-- Skip lines not in the section to be processed
  next unless /^%%Atom Coords/../^%%End Frame/;

  #-- Skip the section markers
  next if (/^%%Atom Coords/ or /^%%End Frame/);

  #-- Parse lines...
  print;
}

__DATA__
%%Atom Coords
-1.13 12.16 6.15
%%End Frame

more stuff...

and more stuff...

%%Atom Coords
-2.26 24.32 12.30
%%End Frame

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In reply to Re: read between two strings by Rhose
in thread read between two strings by harry34

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