You want to create an AWS S3 bucket using the AWS CLI. What do you do?
This assumes that you have installed the AWS CLI. If you need assistance, see this posting.
Run a command like this but replace "foobar" with the unique name of an s3 bucket that other people will see.
aws s3 mb s3://foobar
If you want to create it in a non-default region, use the --region flag like this (but replace us-east-1 with the region of your choice):
aws s3 mb s3://foobar --region us-east-1
If you aren't sure about the default region (if you did not use the --region flag), see How Do You Determine the AWS CLI Default Region?.