curl https://example.com/ | sed "s/a/A/g"
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1256 100 1256 0 0 826 0 0:00:01 0:00:01 --:--:-- 826
<!doctype html>
<html>
<heAd>
<title>ExAmple DomAin</title>