[root@redmine ~]# gem install bundlerFetching: bundler-2.3.19.gem (100%)bundler's executable "bundle" conflicts with /usr/local/ruby-2.4.1/bin/bundleOverwrite the executable? [yN] ySuccessfully installed bundler-2.3.19Parsing documentation for bundler-2.3.19Installing ri documentation for bundler-2.3.19Done installing documentation for bundler after 0 seconds1 gem installed