Creates a new application key. Prints the application key information. This is the only time the application key itself will be returned. Listing application keys will show their IDs, but not the secret keys.
The capabilities are passed in as a comma-separated list, like
duration is the length of time the new application key will exist.
When the time expires the key will disappear and will no longer be usable. If not
specified, the key will not expire.
bucket is the name of a bucket in the account. When specified, the key
will only allow access to that bucket.
namePrefix restricts file access to files whose names start with the prefix.
The output is the new application key ID, followed by the application key itself.
The two values returned are the two that you pass to
authorize-account to use the key.
b2 create-key [-h] [--bucket BUCKET] [--namePrefix NAMEPREFIX] [--duration DURATION] keyName capabilities