rbenv Ubuntu - Himeyama/himeyama GitHub Wiki

sudo apt update
sudo apt install -y autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm6 libgdbm-dev libdb-dev
curl -fsSL https://github.com/rbenv/rbenv-installer/raw/HEAD/bin/rbenv-installer | bash
echo export PATH=\$HOME/.rbenv/bin:\$PATH | tee -a ~/.bashrc
echo eval \"\$\(rbenv init -\)\" | tee -a ~/.bashrc
source ~/.bashrc

rbenv install -l
rbenv install 3.1.2
rbenv versions
rbenv global 3.1.2