Set-Get AWS credentials.md

$ aws configure --profile mycoolproject
$ aws configure list --profile mycoolproject

      Name                    Value             Type    Location
      ----                    -----             ----    --------
   profile                  mycoolproject     manual    --profile
access_key     ****************FAKE shared-credentials-file    
secret_key     ****************FAKE shared-credentials-file    
    region                eu-west-1      config-file    ~/.aws/config

To use a named profile, add the --profile yourprofilename option to your command. The following example lists all of your Amazon EC2 instances using the credentials and settings defined in the mycoolproject profile.

$ aws ec2 describe-instances --profile mycoolproject

To use a named profile for multiple commands, you can avoid specifying the profile in every command by setting the AWS_PROFILE environment variable at the command line.

$ export AWS_PROFILE=mycoolproject

Setting the environment variable changes the default profile until the end of your shell session, or until you set the variable to a different value. (You can make environment variables persistent across future sessions by putting them in your shell's startup script.)