Hi, in the dynu.com script for Raspberry Pi I can not for sure say I know where the password and username is suppose to be put in for the script to work, in the script on your webpage it says

echo url="https://api.dynu.com/nic/update?username=USERNAME&password=PASSWORD" | curl -k -o ~/dynudns/dynu.log -K -

is it the small letter word "password" or big letter word "PASSWORD" that is suppose to be changed to my dynu.com password?

Same goes for the username / USERNAME

Best regards: Tommy Samuelsson

if you havent figured out yet replace the big username with your username and big password with your hashed password