bash script that add user in ubuntu

adduser.sh

echo "Need root permission."
sudo echo "Done."
read -p "1. Enter username: " username
read -p "2. Enter comment: " comment
sudo adduser $username -c "$comment" --firstuid 10000 --ingroup developers --disabled-password --gecos ""
echo "User created!"
echo -e "$username\n$username" | sudo passwd $username >/dev/null 2>&1
sudo passwd -e $username >/dev/null 2>&1
echo "username : $username"
echo "initial password : $username"