RI(1)

NAME
ri - Ruby API reference front end

SYNOPSIS
ri [-Ti] [-d directory] [-f format] [--list-doc-dirs] [--no-standard-docs] [--[no-]{system|site|gems|home}] [--[no-]use-cache] [--width=width] [target ...]

DESCRIPTION
ri is a CLI front end for the Ruby API reference. You can search and read API reference for classes and methods with . ri is a part of Ruby. target can be one of the following forms: It Class for classes It Class::method for class methods It Class#method for instance methods It Class.method for both class and instance methods It method for both class and instance methods All class names may be abbreviated to their minimum unambiguous form. If a name is ambiguous, all valid options will be listed. For example: ri Fil
ri File
ri File.new
ri zip
Note that shell quoting may be required for method names containing punctuation: ri 'Array.[]'
ri compact

OPTIONS

--version
    Prints the version of .

-T

--no-pager
    Send output directly to stdout, rather than to a pager.

-d directory

--doc-dir=directory
    List of directories from which to source documentation in addition to the standard directories. May be repeated.

-f FORMAT

--fmt FORMAT

--format=FORMAT
    Format to use when displaying output: ansi, bs, html, plain, simple Use 'bs' (backspace) with most pager programs. To use ANSI, either disable the pager or tell the pager to allow control characters.

-i

--interactive
    This makes ri go into interactive mode. When ri is in interactive mode it will allow the user to disambiguate lists of methods in case multiple methods match against a method search string. It also will allow the user to enter in a method name (with auto-completion, if readline is supported) when viewing a class.

--list-doc-dirs
    List the directories from which ri will source documentation on stdout and exit.

--no-standard-docs
    Do not include documentation from the Ruby standard library, site_lib, installed gems, or ~/.rdoc. Equivalent to specifying the options --no-system,--no-site,--no-gems, and --no-home.

--[no-]system
    Include documentation from Ruby's standard library. Defaults to true.

--[no-]site
     Include documentation from libraries installed in site_lib. Defaults to true.

--[no-]gems
    Include documentation from RubyGems. Defaults to true.

--[no-]home
    Include documentation stored in ~/.rdoc. Defaults to true.

--[no-]use-cache
    Whether or not to use Ns

-w width

--width=width
    Set the width of the output.

ENVIRONMENT

RI  Additional options.

PAGER
    Used as the name of pager program for displaying.

HOME

USERPROFILE

HOMEPATH
    Path to user's home directory.

FILES

~/.ri
    Caches recently referenced documents here.

~/.rdoc
    Searches user-wide documents here.

SEE ALSO
ruby(1) rdoc(1) gem(1)

REPORTING BUGS
Security vulnerabilities should be reported via an email to <security@ruby-lang.org>. Reported problems will be published after being fixed. And you can report other bugs and feature requests via the Ruby Issue Tracking System (https://bugs.ruby-lang.org/). Do not report security vulnerabilities via the system because it publishes the vulnerabilities immediately.

AUTHORS
Written by Dave Thomas <dave@pragmaticprogrammer.com>