Use AWS CLI to create Super User , so fast !!!

init-super-user.sh

#!/bin/bash

set pipefail
if [ $# != 2 ]
then
    echo "Please give username and password \n ./init-super-user.sh tempuser 2wsx#EDCv ..."
    exit 1
fi

USER_NAME=$1
PASS_WORD=$2

aws iam create-user --user-name $USER_NAME

cat > create-login-profile.json << EOF
{
    "UserName": "$USER_NAME", 
    "Password": "$PASS_WORD", 
    "PasswordResetRequired": false
}
EOF

aws iam create-login-profile --cli-input-json file://create-login-profile.json

aws iam attach-user-policy --user-name $USER_NAME --policy-arn arn:aws:iam::aws:policy/AdministratorAccess

cat create-login-profile.json