$ perl -le'
$_ = q/atcgcgtacatcgatac/;
print;
s/(?<=.{8})(.)/\u$1/s;
print;                   
'
atcgcgtacatcgatac
atcgcgtaCatcgatac

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In reply to Re: String character replacement based on position by jwkrahn
in thread String character replacement based on position by shu_uemura

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