Issue description

Instead of command:
[student@workstation ~]$ oc rsh test-c4d74c9d5-5pq9s \
curl 10.8.0.13:8080 | grep Hello
Hello, world from nginx!

we can use:
[student@workstation ~]$ oc exec test-c4d74c9d5-5pq9s -it –
curl 10.8.0.13:8080 | grep Hello

Using rsh shell session may be simpler to write, but also results in an unnecessary load.