Brew install Error: Failure whil

当brew install报权限错误时，例如

Error: Failure while executing; /bin/ln -h -f -s -- /Applications/Docker.app/Contents/Resources/etc/docker.fish-completion /usr/local/share/fish/vendor_completions.d/docker.fish exited with 1. Here's the output:
ln: /usr/local/share/fish/vendor_completions.d/docker.fish: Permission denied

解决方法

$ sudo chown -R $(whoami) /usr/local/share/fish