Ruby2.7.3を入れる

順番通りに実行すればOK。以上。

yum install -y git bzip2 gcc openssl-devel readline-devel zlib-devel make

git clone https://github.com/rbenv/rbenv.git ~/.rbenv

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

eval "$(rbenv init -)"

mkdir -p "$(rbenv root)/plugins"

git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)/plugins/ruby-build"

git clone https://github.com/rbenv/rbenv-default-gems.git "$(rbenv root)/plugins/rbenv-default-gems"

echo bundler > "$(rbenv root)/default-gems"

git clone https://github.com/rkh/rbenv-update.git "$(rbenv root)/plugins/rbenv-update"

rbenv install -v 2.7.3

rbenv global 2.7.3

rbenv rehash

ruby --version