Content of RPM ruby-devel-2.0.0.648-36.el7.x86_64.rpm :
/etc/rpm/macros.ruby
/usr/include/ruby
/usr/include/ruby.h
/usr/include/ruby/backward
/usr/include/ruby/backward/classext.h
/usr/include/ruby/backward/rubyio.h
/usr/include/ruby/backward/rubysig.h
/usr/include/ruby/backward/st.h
/usr/include/ruby/backward/util.h
/usr/include/ruby/config-x86_64.h
/usr/include/ruby/config.h
/usr/include/ruby/debug.h
/usr/include/ruby/defines.h
/usr/include/ruby/digest.h
/usr/include/ruby/dl.h
/usr/include/ruby/encoding.h
/usr/include/ruby/intern.h
/usr/include/ruby/io.h
/usr/include/ruby/missing.h
/usr/include/ruby/oniguruma.h
/usr/include/ruby/re.h
/usr/include/ruby/regex.h
/usr/include/ruby/ruby.h
/usr/include/ruby/st.h
/usr/include/ruby/subst.h
/usr/include/ruby/thread.h
/usr/include/ruby/util.h
/usr/include/ruby/version.h
/usr/include/ruby/vm.h
/usr/lib64/libruby.so
/usr/lib64/pkgconfig/ruby.pc
/usr/share/doc/ruby-devel-2.0.0.648
/usr/share/doc/ruby-devel-2.0.0.648/COPYING
/usr/share/doc/ruby-devel-2.0.0.648/COPYING.ja
/usr/share/doc/ruby-devel-2.0.0.648/GPL
/usr/share/doc/ruby-devel-2.0.0.648/LEGAL
/usr/share/doc/ruby-devel-2.0.0.648/README.EXT
/usr/share/doc/ruby-devel-2.0.0.648/README.EXT.ja