Actually I am trying to make the following command in one command
kubectl get pods| grep -oP 'mag[^\s]+'
output
mag121111
After that I will run the following command
kubectl exec -itmag121111 bash
Now I am trying as following
kubectl get pods| grep -oP 'mag[^\s]+' | kubectl exec -it bash
kubectl exec -it $(kubectl get pods| grep -oP 'mag[^\s]+') --/bin/bash
OR
kubectl exec -it $(kubectl get pods| grep -oP 'mag[^\s]+') --bash
This works for me
kubectl exec -it $(kubectl get pods| grep -oP 'mag[^\s]+') --container magname -- /bin/bash
here magname is actual pod name
kubectl exec -it $(kubectl get pods| grep -oP 'mag[^\s]+') -- /bin/bash