$ brew install rbenv ruby-build
$ rbenv versions
$ rbenv local 2.6.9
$ rbenv install 2.6.9
$ ruby --version
$ rbenv install -L | grep 2.6.9
# ~/.bash_profile || ~/.zsh_profile
# Detect Ruby version with rbenv
if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi
# mimemagic package
$ brew install shared-mime-info