Does “ - ” mean stdout in bash?

Question

Is \" - \" a shortcut for stdout in bash? If not what does it mean? For example,

wget -q -O - $line 

How about stdin?

Thanks and re

Answer 1

It depends on the program. Ususally, - means "send to the output".

Use read:

#!/bin/bash

echo -n "What's your name? "
read var1
echo "hello $var1"