$ aws configure AWS Access Key ID [None]: YOURKEY
AWS Secret Access Key [None]: YOURSECRETKEY
Default region name [None]: us-west-2
Default output format [None]: json
$ aws s3 ls
$ aws s3 cp file-to-copy-in-s3.txt s3://my-s3-backet-name/
$ aws configure AWS Access Key ID [None]: YOURKEY
AWS Secret Access Key [None]: YOURSECRETKEY
Default region name [None]: us-west-2
Default output format [None]: json
$ aws s3 ls
$ aws s3 cp file-to-copy-in-s3.txt s3://my-s3-backet-name/