执行过sudo chown -R $(whoami):admin /usr/local && sudo chmod -R g+rwx /usr/local后，发现zsh报错
[oh-my-zsh] For safety, we will not load completions from these directories until
[oh-my-zsh] you fix their permissions and ownership and restart zsh.
[oh-my-zsh] See the above list for directories with group or other writability.
解决办法：
chmod 755 /usr/local/share/zsh
chmod 755 /usr/local/share/zsh/site-functions
