先来一发。我这种版本帝是无药可救的。macos是最新系统多少我不记得了。。。正常通道最新的就对了目前ruby版本是2.3.1。我用rvm 无法升级到2.4.0或者2.3.3，请问怎么升级呢？
oops。。报错内容我背不出来。mac不在手边
走同样的路，发现不同的人生
First install the MAC package management program Homebrew and enter it in the terminal
ruby -e "$(curl -fsSL \ https://raw.githubusercontent.com/Homebrew/install/master/install)
Then use Homebrew to update Ruby:
brew install ruby
Compile it yourself
homebrew
rbenv or rvm
If it doesn’t take effect, there may be something wrong PATH
PATH
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
First install the MAC package management program Homebrew and enter it in the terminal
Then use Homebrew to update Ruby:
Compile it yourself
homebrew
rbenv or rvm
If it doesn’t take effect, there may be something wrong
PATH