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021e3ebf0c
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. improve kubectl cp command in several ways **Release note**: "kubectl cp" process soft link in better ways as well as some little bugs **Soft link**: before this patch "kubectl cp" command will copy the soft link to destination as an empty regular file after this patch "kubectl cp" command will behave the same as tar command this patch improves it on both from container and to container **some bugs** 1.from container to host a.when copy a file ends with '/', it will cause a panic. for example, container gakki has a regular file /tmp/test, then run command _kubectl cp gakki:/tmp/test/ /tmp_ a panic happens b.when copy a file which does not exist in container, the command ends up without any error information 2.from host to container a.when run command like kubectl cp "" gakki:/tmp it will try cp current directory to container, in other words, this command works the same as kubectl cp . gakki:/tmp b.current cp command will omit an empty directory