All are clearly listed on the progate site. (Throwing to progate despite the memorable first post: sweat_smile :) It was my first time to build an environment, but it took about 20 minutes. (The text editor environment has already been built) [Mac people] https://prog-8.com/docs/ruby-env
[Windows people] https://prog-8.com/docs/ruby-env-win
Towards the end of the article
rbenv global 2.6.5
By entering the command, change the setting to use the version of Ruby installed this time,
ruby -v
If 2.6.5 is displayed by inputting the command, it says OK. However, if you do not enter the command ruby -v after restarting the terminal after executing the rbenv global command, Note that 2.6.5 may not be displayed (older versions will be displayed).
Also, in the article, a command to install Ruby version 2.6.5 is written (as of May 17, 2020), If you want to install another version, you will have to replace only the version part and enter the command.
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