NAMESPACE=네임스페이스
kubectl delete job -n $NAMESPACE $(kubectl get job -n $NAMESPACE -o custom-columns=:.metadata.name)
$ NAMESPACE=mycron
$ kubectl delete job -n $NAMESPACE $(kubectl get job -n $NAMESPACE -o custom-columns=:.metadata.name)
job.batch "cronjob1-1603324800" deleted
job.batch "cronjob1-1603411200" deleted
job.batch "cronjob1-1603497600" deleted
job.batch "cronjob1-manual-jbc" deleted
job.batch "cronjob2-1602316200" deleted
job.batch "cronjob2-1603544400" deleted
job.batch "cronjob2-1603545000" deleted
...
