How do I echo stars (*) when reading password with `read`?

Question

What do I need to do for code in Bash, if I want to echo *s in place of password characters (or even just hide the characters completely) when the user types so

Answer 1

If you don't care about it being interactive, you can simply do

read -s pass
echo "$pass" | sed 's/./*/g'

This will show a * for each character of the entered password after enter is pressed.