cd /var/www/localhost/htdocs/rubydocs git clone --branch v2_7_6 --depth 1 https://github.com/ruby/ruby.git sdoc --all --main=ruby/README.md --output=ruby-2.7.6 ruby git clone --branch v6.1.6 --depth 1 https://github.com/rails/rails.git sdoc --all --main=ruby/README.md --output=rails-6.1.6 rails sdoc-merge --op=redmine-5.0 ruby-2.7.6 rails-6.1.6 rm -rf ruby/ ruby-2.7.6/ rails/ rails-6.1.6/