# Create the hosted zone once, then save its Id as HOSTED_ZONE_ID
aws route53 create-hosted-zone --name example.com --caller-reference $(date +%s)

cat > change-batch.json <<'JSON'
{
  "Changes": [
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "example.com.",
        "Type": "A",
        "TTL": 300,
        "ResourceRecords": [
          {
            "Value": "1.2.3.4"
          }
        ]
      }
    },
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "example.com.",
        "Type": "MX",
        "TTL": 300,
        "ResourceRecords": [
          {
            "Value": "10 mail.example.com"
          }
        ]
      }
    },
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "example.com.",
        "Type": "TXT",
        "TTL": 300,
        "ResourceRecords": [
          {
            "Value": "\"v=spf1 include:_spf.google.com ~all\""
          }
        ]
      }
    },
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "www.example.com.",
        "Type": "CNAME",
        "TTL": 300,
        "ResourceRecords": [
          {
            "Value": "example.com"
          }
        ]
      }
    }
  ]
}
JSON

aws route53 change-resource-record-sets --hosted-zone-id "$HOSTED_ZONE_ID" --change-batch file://change-batch.json