Redhat Openshift 4.2 upgrade using CLI

gistfile1.txt

1. oc get clusterversion 
2. review the current update channel information and confirm that your channel is set to stable-4.2:
      oc get clusterversion -o json|jq ".items[0].spec"

      {
        "channel": "stable-4.2",
        "clusterID": "990f7ab8-109b-4c95-8480-2bd1deec55ff",
        "upstream": "https://api.openshift.com/api/upgrades_info/v1/graph"
      }
3.View the available updates and note the version number of the update that you want to apply
    oc adm upgrade
4.To update to the latest version:
    oc adm upgrade --to-latest=true 
5.To update to a specific version:
  oc adm upgrade --to=<version>
  oc adm upgrade --to=4.2.13
6.  Review the status of the Cluster Version Operator:
    oc get clusterversion -o json|jq ".items[0].spec"
7.oc get clusterversion -o json|jq ".items[0].status.history"