n00b here, but it looks like I have 4 versions of Ruby. How do I delete the ones I don't want and how do I keep the most up to date one? Also, shouldn't both of these commands have the same output? n00b here, but it looks like I have 4 versions
阅读背景：
我不知道我正在使用什么样的Ruby
来源：互联网
分享到：
