1
cat <<EOT > variables.tf
variable "user_names" {
  description = "Create IAM users with these names"
  type        = list(string)
  default     = ["gasida", "akbun", "fullmoon"]
}
EOT


2
count.index  
cat <<EOT > iam.tf
provider "aws" {
  region = "ap-northeast-2"
}
resource "aws_iam_user" "myiam" {
  count = length(var.user_names)
  name  = var.user_names[count.index]
}
EOT

3
terraform init 

4
terraform plan

5
cat <<EOT > outputs.tf
output "first_arn" {
  value       = aws_iam_user.myiam[0].arn
  description = "The ARN for the first user"
}
output "all_arns" {
  value       = aws_iam_user.myiam[*].arn
  description = "The ARNs for all users"
}
EOT


5
terraform apply -auto-approve

terraform state list

terraform output