I've exported my environment variables to make it easier to run the commands:
export SCHEMA_REGISTRY_URL=xxxxx
export SCHEMA_REGISTRY_API_KEY=xxxxx
export SCHEMA_REGISTRY_API_SECRET=xxxxx
export BASIC_AUTH_USER_INFO=$SCHEMA_REGISTRY_API_KEY:$SCHEMA_REGISTRY_API_SECRET
export BOOTSTRAP_SERVERS=SASL_SSL://xxxxx.xxxxx.aws.confluent.cloud:9092
export KAFKA_API_KEY=xxxxx
export KAFKA_API_SECRET=xxxxx