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How do I print character automatically in bash script?

I wanna uninstall some program via bash script. After run the command - terminal asking me if I'm sure that I want to uninstall it. So I need to answer y. I want to do it automatically and answer y after delay of 10 seconds.

I did this example but it's not working -

#!/usr/bin
/opt/MNG/MNGVIEWHP/fe/uninstall
sleep 10
echo "y"

Any idea? BTW - Centos 7.2