1.错误提示
Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
2.解决方案
sudo chown -R $(whoami) $(brew --prefix)/*
如果用户没有权限修改/user/local，则
sudo install -d -o $(whoami) -g admin /usr/local/Frameworks
