第一次尝试安装滑轨时出现错误。我正在使用macOS High Sierra

Question

jeffreys-air:~ Jeffrey$ gem install rails
ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.

我不知道这意味着什么。有人请解释

Answer 1

使用gem update --system升级Ruby gem Manager：

$ gem update --system

将此添加到您的 .bash_profile

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*