- install RVM
\curl -sSL https://get.rvm.io | bash -s stable- List all ruby versions
rvm list known- Install a version of Ruby
rvm install ruby-2.4.1- Select a default version
rvm use ruby-2.4.1
rvm use ruby-2.4.1 --default\curl -sSL https://get.rvm.io | bash -s stablervm list knownrvm install ruby-2.4.1rvm use ruby-2.4.1
rvm use ruby-2.4.1 --default