我正在尝试在 El Capitan 上安装 Jekyll，但是我确实遇到了权限错误，如下所示。我以 root 用户身份登录。
Linards:~ Berzins$ sudo gem install jekyll
Password:
Ignoring psych-2.0.15 because its extensions are not built. Try: gem pristine psych --version 2.0.15
Ignoring json-1.8.3 because its extensions are not built. Try: gem pristine json --version 1.8.3
Fetching: jekyll-3.1.6.gem (100%)
ERROR: While exexcuting gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/jekyll
Linards:~ Berzins$ gem pristine psych --version 2.0.15
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
Linards:~ Berzins$ …