defstorageclass - Get or set the default storage class on buckets
gsutil defstorageclass set <storage-class> gs://<bucket_name>...
gsutil defstorageclass get gs://<bucket_name>...
The defstorageclass command has two sub-commands:
The "defstorageclass set" command sets the default
storage class for
the specified bucket(s). If you specify a default storage class for a certain
bucket, Cloud Storage applies the default storage class to all new
objects uploaded to that bucket, except when the storage class is overridden
by individual upload requests.
Setting a default storage class on a bucket provides a convenient way to
ensure newly uploaded objects have a specific storage class. If you don't set
the bucket's default storage class, it will default to Standard.