
Install ROSA
rosa

You will see the following results:
$ rosa
Command line tool for Red Hat OpenShift Service on AWS.
For further documentation visit https://access.redhat.com/documentation/en-us/red_hat_openshift_service_on_aws
Usage:
rosa [command]
Available Commands:
completion Generates completion scripts
create Create a resource from stdin
delete Delete a specific resource
describe Show details of a specific resource
download Download necessary tools for using your cluster
edit Edit a specific resource
grant Grant role to a specific resource
help Help about any command
init Applies templates to support Red Hat OpenShift Service on AWS
install Installs a resource into a cluster
list List all resources of a specific type
login Log in to your Red Hat account
logout Log out
logs Show installation or uninstallation logs for a cluster
revoke Revoke role from a specific resource
uninstall Uninstalls a resource from a cluster
upgrade Upgrade a resource
verify Verify resources are configured correctly for cluster install
version Prints the version of the tool
whoami Displays user account information
Flags:
--color string Surround certain characters with escape sequences to display them in color on the terminal. Allowed options are [auto never always] (default "auto")
--debug Enable debug mode.
-h, --help help for rosa
Use "rosa [command] --help" for more information about a command.
rosa verify permissions

I: Validating SCP policies...
I: AWS SCP policies ok
Install ROSA through Red Hat Hybrid Cloud Console

Install OpenShift CLI with Red Hat Official Guide
oc

$ oc
OpenShift Client
This client helps you develop, build, deploy, and run your applications on any
OpenShift or Kubernetes cluster. It also includes the administrative
commands for managing a cluster under the 'adm' subcommand.
To familiarize yourself with OpenShift, login to your cluster and try creating a
sample application:
oc login mycluster.mycompany.com
oc new-project my-example
oc new-app django-psql-example
oc logs -f bc/django-psql-example
To see what has been created, run:
oc status
and get a command shell inside one of the created containers with:
oc rsh dc/postgresql
To see the list of available toolchains for building applications, run:
oc new-app -L
Since OpenShift runs on top of Kubernetes, your favorite kubectl commands are
also present in oc,
allowing you to quickly switch between development and debugging. You can also
run kubectl directly
against any OpenShift cluster using the kubeconfig file created by 'oc login'.
For more on OpenShift, see the documentation at https://docs.openshift.com.
To see the full list of commands supported, run 'oc --help'.