.TH RI 1 "Ruby Programmers Reference Guide" "November 7, 2012" "UNIX"
.SH NAME
\fBri\fP
\- Ruby API reference front end
.SH SYNOPSIS
.br
\fBri\fP
[\fB\-Ti\fP]
[\fB\-d\fP \fIdirectory\fP]
[\fB\-f\fP \fIformat\fP]
[\fB\--list-doc-dirs\fP]
[\fB\--no-standard-docs\fP]
[\fB\--\fP[\fBno-\fP]Bro \fBsystem\fP|\fBsite\fP|\fBgems\fP|\fBhome\fP Brc]
[\fB\--\fP[\fBno-\fP]\fBuse-cache\fP]
[\fB\--width\fP=\fIwidth\fP]
[\fItarget\fP ...]
.SH DESCRIPTION
\fBri\fP
is a CLI front end for the Ruby API reference.
You can search and read API reference for classes and methods with
\fB.\fP

\fBri\fP
is a part of Ruby.

\fItarget\fP
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
.br
ri File
.br
ri File.new
.br
ri zip
.br

Note that shell quoting may be required for method names containing
punctuation:

ri 'Array.[]'
.br
ri compact\!
.br
.SH OPTIONS

.TP
\fB\--version\fP
Prints the version of
\fB.\fP

.TP
\fB\-T\fP
.TP
\fB\--no-pager\fP
Send output directly to stdout, rather than to a pager.

.TP
\fB\-d\fP \fIdirectory\fP
.TP
\fB\--doc-dir\fP=\fIdirectory\fP
List of directories from which to source documentation in addition to the standard
directories.  May be repeated.

.TP
\fB\-f\fP \fIFORMAT\fP
.TP
\fB\--fmt\fP \fIFORMAT\fP
.TP
\fB\--format\fP=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.

.TP
\fB\-i\fP
.TP
\fB\--interactive\fP
This makes
\fBri\fP
go into interactive mode.

When
\fBri\fP
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.

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

.TP
\fB\--no-standard-docs\fP
Do not include documentation from the Ruby standard library,
\fIsite_lib\fP,
installed gems, or
\fI~/.rdoc\fP.

Equivalent to specifying the options
\fB\--no-system\fP,\fB\--no-site\fP,\fB\--no-gems\fP,
and
\fB\--no-home\fP.

.TP
\fB\--\fP[\fBno-\fP]\fBsystem\fP
Include documentation from Ruby's standard library.  Defaults to true.

.TP
\fB\--\fP[\fBno-\fP]\fBsite\fP
 Include documentation from libraries installed in site_lib. Defaults to true.

.TP
\fB\--\fP[\fBno-\fP]\fBgems\fP
Include documentation from RubyGems. Defaults to true.

.TP
\fB\--\fP[\fBno-\fP]\fBhome\fP
Include documentation stored in ~/.rdoc.  Defaults to true.

.TP
\fB\--\fP[\fBno-\fP]\fBuse-cache\fP
Whether or not to use
\fBNs\fP
's cache. True by default.

.TP
\fB\-w\fP \fIwidth\fP
.TP
\fB\--width\fP=\fIwidth\fP
Set the width of the output.


.SH ENVIRONMENT

.TP
.B RI
Additional options.

.TP
.B PAGER
Used as the name of pager program for displaying.

.TP
.B HOME
.TP
.B USERPROFILE
.TP
.B HOMEPATH
Path to user's home directory.

.SH FILES

.TP
.B ~/.ri
Caches recently referenced documents here.

.TP
.B ~/.rdoc
Searches user-wide documents here.


.SH SEE ALSO
\fBruby\fP(1)
\fBrdoc\fP(1)
\fBgem\fP(1)

.SH 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 (http://bugs.ruby-lang.org).
Do not report security vulnerabilities
via the system because it publishes the vulnerabilities immediately.
.SH AUTHORS
Written by Dave Thomas
<dave@pragmaticprogrammer.com>