You may see this error after installed Kubernetes and run “brew doctor”.
Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
kubernetes-cli
It can be solved by running below after installing kubectl with brew on macOS.
$ rm /usr/local/bin/kubectl
$ brew link --overwrite kubernetes-cli
What do you think?