To grant the access keys to the Amazon EC2 Command Line Interface (CLI), you set AWS_ACCESS_KEY and: code example
Example: mac set up aws credentials
curl "https://awscli.amazonaws.com/AWSCLIV2.pkg" -o "AWSCLIV2.pkg"
sudo installer -pkg AWSCLIV2.pkg -target /
#Confirm
$ which aws
#/usr/local/bin/aws
$ aws --version
#aws-cli/2.0.0 Python/3.7.4 Darwin/18.7.0 botocore/2.0.0
# Configure
aws configure