Good point.

How about: 

   perl -lne 'next if /^.{188}0{8}.{16}$/; print if s/^(.{188})\d{8}(.
+{16})$/${1}20020101$2/' original.txt > new.txt

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In reply to Re: Re: Re: search and replace on a line by line basis by gsiems
in thread search and replace on a line by line basis by Anonymous Monk

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