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.\"Ruby is copyrighted by Yukihiro Matsumoto <matz@netlab.jp>. .Dd November 7, 2012 .Dt RI(1) "" "Ruby Programmers Reference Guide" .Os UNIX .Sh NAME .Nm ri .Nd Ruby API reference front end .Sh SYNOPSIS .Nm .Op Fl Ti .Op Fl d Ar directory .Op Fl f Ar format .Op Fl -list-doc-dirs .Op Fl -no-standard-docs .Op Fl - Ns Oo Cm no- Oc Ns Bro Cm system Ns | Ns Cm site Ns | Ns Cm gems Ns | Ns Cm home Brc .Op Fl - Ns Oo Cm no- Oc Ns Cm use-cache .Op Fl -width Ns = Ns Ar width .Op Ar target ... .Sh DESCRIPTION .Nm is a CLI front end for the Ruby API reference. You can search and read API reference for classes and methods with .Nm . .Pp .Nm is a part of Ruby. .Pp .Ar target can be one of the following forms: .Bl -diag -offset indent .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 .El .Pp All class names may be abbreviated to their minimum unambiguous form. If a name is ambiguous, all valid options will be listed. .Pp For example: .Bd -literal -offset indent ri Fil ri File ri File.new ri zip .Ed .Pp Note that shell quoting may be required for method names containing punctuation: .Bd -literal -offset indent ri 'Array.[]' ri compact\! .Ed .Sh OPTIONS .Bl -tag -width "1234567890123" -compact .Pp .It Fl -version Prints the version of .Nm . .Pp .It Fl T .It Fl -no-pager Send output directly to stdout, rather than to a pager. .Pp .It Fl d Ar directory .It Fl -doc-dir Ns = Ns Ar directory List of directories from which to source documentation in addition to the standard directories. May be repeated. .Pp .It Fl f Ar FORMAT .It Fl -fmt Ar FORMAT .It Fl -format Ns = Ns FORMAT Format to use when displaying output: .Pp ansi, bs, html, plain, simple .Pp Use 'bs' (backspace) with most pager programs. To use ANSI, either disable the pager or tell the pager to allow control characters. .Pp .It Fl i .It Fl -interactive This makes .Nm go into interactive mode. .Pp When .Nm 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. .Pp .It Fl -list-doc-dirs List the directories from which ri will source documentation on stdout and exit. .Pp .It Fl -no-standard-docs Do not include documentation from the Ruby standard library, .Pa site_lib , installed gems, or .Pa ~/.rdoc . .Pp Equivalent to specifying the options .Fl -no-system , Fl -no-site , Fl -no-gems , and .Fl -no-home . .Pp .It Fl - Ns Oo Cm no- Oc Ns Cm system Include documentation from Ruby's standard library. Defaults to true. .Pp .It Fl - Ns Oo Cm no- Oc Ns Cm site Include documentation from libraries installed in site_lib. Defaults to true. .Pp .It Fl - Ns Oo Cm no- Oc Ns Cm gems Include documentation from RubyGems. Defaults to true. .Pp .It Fl - Ns Oo Cm no- Oc Ns Cm home Include documentation stored in ~/.rdoc. Defaults to true. .Pp .It Fl - Ns Oo Cm no- Oc Ns Cm use-cache Whether or not to use .Nm Ns .Ns 's cache. True by default. .Pp .It Fl w Ar width .It Fl -width Ns = Ns Ar width Set the width of the output. .Pp .El .Pp .Sh ENVIRONMENT .Bl -tag -width "USERPROFILE" -compact .Pp .It Ev RI Additional options. .Pp .It Ev PAGER Used as the name of pager program for displaying. .Pp .It Ev HOME .It Ev USERPROFILE .It Ev HOMEPATH Path to user's home directory. .El .Pp .Sh FILES .Bl -tag -width "USERPROFILE" -compact .Pp .It Pa ~/.ri Caches recently referenced documents here. .Pp .It Pa ~/.rdoc Searches user-wide documents here. .Pp .El .Pp .Sh SEE ALSO .Xr ruby 1 .Xr rdoc 1 .Xr gem 1 .Pp .Sh REPORTING BUGS .Bl -bullet .Li Security vulnerabilities should be reported via an email to .Aq security@ruby-lang.org Ns .Li . Reported problems will be published after being fixed. .Pp .Li And you can report other bugs and feature requests via the Ruby Issue Tracking System (http://bugs.ruby-lang.org). Do not report security vulnerabilities via the system because it publishes the vulnerabilities immediately. .El .Sh AUTHORS Written by Dave Thomas .Aq dave@pragmaticprogrammer.com