Also try the postmodern tools: ruby-install &amp; chruby, which work perfectly in my experience:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;postmodern&#x2F;ruby-install" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;postmodern&#x2F;ruby-install</a><p><a href="https:&#x2F;&#x2F;github.com&#x2F;postmodern&#x2F;chruby" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;postmodern&#x2F;chruby</a>