how can I upgrade the native ruby in high Sierra ?

have need to upgrade the native ruby version in high sierra is there a manual how to do this

instead of using hombrew rbenv or rvm ?

you'll probably make the system unstable and eventually crash and burn but since it's beta won't matter anyway.


sudo /usr/bin/curl -L https://get.rvm.io | bash -s stable --ruby
how can I upgrade the native ruby in high Sierra ?
 
 
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