更新Ruby安装源
sudo apt-add-repository -y ppa:rael-gc/rvm
sudo apt update -y
sudo apt -y install rvm
配置RVM命令
echo "source /usr/share/rvm/scripts/rvm" | sudo tee -a ~/.bashrc
source /usr/share/rvm/scripts/rvm
运行安装Ruby
rvm install "ruby-2.7.2"
其他文章
Ubuntu安装升级Ruby 2.7