alguien me puede ayudar

[marjorie122813 Aymerick]

RubyGems installed the following executables:
/usr/bin/gem2.3

Ruby Interactive (ri) documentation was installed. ri is kind of like man
pages for ruby libraries. You may access it like this:
ri Classname
ri Classname.class_method
ri Classname#instance_method
If you do not wish to install this documentation in the future, use the
–no-document flag, or set it as the default in your ~/.gemrc file. See
‘gem help env’ for details.