zhongjiajie commented on issue #6883: [AIRFLOW-6330] Show cli help when param blank or typo URL: https://github.com/apache/airflow/pull/6883#issuecomment-568534370 This patch change cli behavior like below * **Main command** or just `Airflow` ```sh # Only airflow with blank parameter $ airflow usage: airflow [-h] {config,connections,dags,db,flower,kerberos,pools,roles,rotate_fernet_key,scheduler,sync_perm,tasks,users,variables,version,webserver,worker} sub-command help config Show current application configuration connections List/Add/Delete connections dags List and manage DAGs db Database operations flower Start a Celery Flower kerberos Start a kerberos ticket renewer pools CRUD operations on pools roles Create/List roles rotate_fernet_key Rotate all encrypted connection credentials and variables; see https://airflow.readthedocs.io/en/stable/howto/secure- connections.html#rotating-encryption-keys scheduler Start a scheduler instance sync_perm Update permissions for existing roles and DAGs tasks List and manage tasks users CRUD operations on users variables CRUD operations on variables version Show the version webserver Start a Airflow webserver instance worker Start a Celery worker nodeoptional arguments: -h, --help show this help message and exit airflow command error: the following arguments are required: subcommand, see help above. # airflow [subcommands] with blank parameter $ airflow connections usage: airflow connections [-h] {list,add,delete} ...positional arguments: {list,add,delete} list List connections add Add a connection delete Delete a connectionoptional arguments: -h, --help show this help message and exit airflow connections command error: the following arguments are required: subcommand, see help above. ``` * **typo** or **wrong** parameter ```sh $ airflow connections docker usage: airflow connections [-h] {list,add,delete} ...positional arguments: {list,add,delete} list List connections add Add a connection delete Delete a connectionoptional arguments: -h, --help show this help message and exit airflow connections command error: argument subcommand: invalid choice: 'docker' (choose from 'list', 'add', 'delete'), see help above. ```
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
