ruby-build(1) [debian man page]

RUBY-BUILD(1)															     RUBY-BUILD(1)

NAME

       ruby-build - compile and install Rubies

SYNOPSIS

       ruby-build [-v|--verbose] [-k|--keep] definition prefix
       ruby-build --definitions
       ruby-build --version
       ruby-build [-h|--help]
       rbenv install [-k|--keep] definition

DESCRIPTION

       ruby-build provides a simple way to compile and install different versions of Ruby on UNIX-like systems.

       ruby-build  downloads,  builds  and  installs the Ruby version specified in a definition into a prefix directory. Definitions can be chosen
       from the list of installed definitions or by specifying a file path for a definition.

       rbenv(1) users can also use the provided rbenv install command, which installs Rubies into the rbenv directory.

OPTIONS

       --definitions
	      List available definitions.

       -k, --keep
	      Don't delete source code after installation.

       -v, --verbose
	      Display compiler messages on standard output.

       --version
	      Show ruby-build version and exit.

       -h, --help
	      Show usage information and exit.

EXAMPLES

       Install Ruby 1.9.3 (MRI, patch level 0) to ~/rubies/mri-1.9.3

	   $ ruby-build 1.9.3-p0 ~/rubies/mri-1.9.3

       Install Ruby Enterprise Edition 1.8.7 (patch level 2011.03) for rbenv(1):

	   $ rbenv install ree-1.8.7-2011.03

       Install Ruby from a custom definition into ~/your-ruby:

	   $ rbenv install /path/to/your/own/ruby/definition ~/your-ruby

ENVIRONMENT

       CC     Sets the path to the C compiler.

       CONFIGURE_OPTS
	      Options that are passed to configure when building a Ruby.

       MAKE_OPTS
	      Options that are passed to make when building a Ruby.

       MAKEOPTS
	      Used instead of MAKE_OPTS when MAKE_OPTS is not defined.

       TMPDIR Sets the location where ruby-build stores temporary files.

       RUBY_BUILD_BUILD_PATH
	      Sets the location in which sources are downloaded and built.

AUTHORS

       ruby-build is developed by Sam Stephenson <sam@37signals.com>.

       This man page was written for the Debian GNU/Linux distribution by Sebastian Boehm <sebastian@sometimesfood.org> but may be used by others.

SEE ALSO

       rbenv(1)

								     June 2012							     RUBY-BUILD(1)

IRB(1)							 Ruby Programmers Reference Guide						    IRB(1)

NAME

     irb -- Interactive Ruby Shell

SYNOPSIS

     irb [--version] [-dfm] [-I directory] [-r library] [--[no]inspect] [--[no]readline] [--prompt mode] [--prompt-mode mode] [--inf-ruby-mode]
	 [--simple-prompt] [--noprompt] [--tracer] [--back-trace-limit n] [--irb_debug n] [--] [program_file] [argument ...]

DESCRIPTION

     irb is the REPL(read-eval-print loop) environment for Ruby programs.

OPTIONS

     --version	    Prints the version of irb.

     -E external[:internal]
     --encoding external[:internal]
		    Same as `ruby -E' .  Specifies the default value(s) for external encodings and internal encoding. Values should be separated
		    with colon (:).

		    You can omit the one for internal encodings, then the value (Encoding.default_internal) will be nil.

     -I path	    Same as `ruby -I' .  Specifies $LOAD_PATH directory

     -U 	    Same as `ruby -U' .  Sets the default value for internal encodings (Encoding.default_internal) to UTF-8.

     -d 	    Same as `ruby -d' .  Sets $DEBUG to true.

     -f 	    Suppresses read of ~/.irbrc.

     -h
     --help	    Prints a summary of the options.

     -m 	    Bc mode (load mathn, fraction or matrix are available)

     -r library     Same as `ruby -r'.	Causes irb to load the library using require.

     --inspect	    Uses `inspect' for output (default except for bc mode)

     --noinspect    Doesn't use inspect for output

     --readline     Uses Readline extension module.

     --noreadline   Doesn't use Readline extension module.

     --prompt mode
     --prompt-mode mode
		    Switch prompt mode. Pre-defined prompt modes are `default', `simple', `xmp' and `inf-ruby'.

     --inf-ruby-mode
		    Uses prompt appropriate for inf-ruby-mode on emacs.  Suppresses --readline.

     --simple-prompt
		    Makes prompts simple.

     --noprompt     No prompt mode.

     --tracer	    Displays trace for each execution of commands.

     --back-trace-limit n
		    Displays backtrace top n and tail n.  The default value is 16.

     --irb_debug n  Sets internal debug level to n (not for popular use)

ENVIRONMENT

     IRBRC

     Also irb depends on same variables as ruby(1).

FILES

     ~/.irbrc	     Personal irb initialization.

EXAMPLES

	   % irb
	   irb(main):001:0> 1 + 1
	   2
	   irb(main):002:0> def t(x)
	   irb(main):003:1> x+1
	   irb(main):004:1> end
	   => nil
	   irb(main):005:0> t(3)
	   => 4
	   irb(main):006:0> if t(3) == 4
	   irb(main):007:1> p :ok
	   irb(main):008:1> end
	   :ok
	   => :ok
	   irb(main):009:0> quit
	   %

SEE ALSO

     ruby(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 (http://bugs.ruby-lang.org).  Do not report security
     vulnerabilities via the system because it publishes the vulnerabilities immediately.

AUTHORS

     Written by Keiju ISHITSUKA.

UNIX
								 November 7, 2012							      UNIX