For the following commands to work, you need to have AWS CLI and gstuil installed. For gsutil, you can use the GCP cloud shell. For AWS CLI , you can provision an Aaazon Linux EC2 insances which comes with the S3 CLI Installed.
aws s3 ls
gsutil ls
aws s3 mb s3://new-bucket-mdev
gsutil mb gs://new-bucket-mdev
aws s3 cp file.txt s3://new-bucket-mdev
gsutil cp file.txt gs://new-bucket-mdev