Yes it's possible, you can use something like this:
gsutil -m acl ch -R -g AllAuth:R gs://my-bucket/
For more information : DOCUMENTATION
Question
My google app engine application refers images in a storage bucket. I uploaded them using the Developer Console. Right now when I load my application and error occurs.
Fatal error: Uncaught exception 'google\appengine\api\cloud_storage\CloudStorageException' with message 'Access denied to image.' in ...
I can fix this error by changing the "All Authenticated Users"
for each object using the Developer Console. Practically this is a time consuming job since I have lot of images in my bucket.
Is there a way to set "All authenticated user"
permission for all the objects in my storage bucket through gsutil?
Solution
Yes it's possible, you can use something like this:
gsutil -m acl ch -R -g AllAuth:R gs://my-bucket/
For more information : DOCUMENTATION