$ sudo apt-get install -y libreadline-dev

$ git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
$ git clone https://github.com/rbenv/rbenv.git ~/.rbenv

export PATH=$PATH:$HOME/.rbenv/bin 

#Für Bash neu laden
$ source ~/.bashrc
#Für zsh neu laden
$ source ~/.zshrc

#Initialisieren
$ rbenv init
#Versionsbestätigung
$ rbenv --version

$ rbenv install 2.7.1
$ rbenv global 2.7.1
$ ruby --version

$ irb
irb(main)> 5 + 10
=> 15

$ git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

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