change aws profile code example

Example 1: echo aws profile

export AWS_PROFILE=my-profile

echo $AWS_PROFILE

Example 2: aws configure profile

aws configure --profile

Example 3: aws configure change default profile

$ aws configure
AWS Access Key ID [****************FFGG]: ZZZZZZCCCDDDEEEFFFZZ
AWS Secret Access Key [****************mmmn]: zzzzzzcccdddeeefffggghhhiiijjjkkklllmmzz
Default region name [us-east-1]: us-west-2
Default output format [text]: json