About:

    rvm 0.0.10 http://github.com/wayneeseguin/rvm

    by Wayne E. Seguin (wayneeseguin@gmail.com)

  Usage:

    rvm Action [Implementation] [Options]

  Action:

    * usage   - Show this usage information
    use       - Switch to using a specific ruby versio (new login shell)
    info      - Show information for current ruby
    list      - Show currently installed versions
    gemdir    - Switch to gem directory for installation (new login shell)
    srcdir    - Switch to src directory for the current ruby installation
    gemdup    - Clone source implementation version gems to currently used version 
                (highly expiramental) Example: rvm gemdup ~/.gem/ruby/1.8/
    install   - Install a ruby version, default is from source
    uninstall - Uninstall a ruby version
    debug     - Emit environment and configuration information for debugging

  Implementation:

    * ruby    - MRI/YARV Ruby (The Standard), defaults to 1.8.6
    jruby     - jRuby
    ree       - Ruby Enterprise Edition
    default   - Resets to the default system ruby
    all       - Used with install, installs all latest known versions
  
  Options: 

    -v|--version    - Ruby Package Version, defaults to 'latest'
    -l|--level      - Patch level for the specified Ruby version
    -p|--prefix     - Package and source directory prefix, with trailing slash!
                      Default is a users home directory and /usr/local/ for root
    -c|--configure  - Options for source compile (default: --enable-shared)
    -d|--debug      - Toggle debug mode on for extra messages (NYI)

  Notes:

    * Defaults above are denoted with a '*' prefix.
    * rvm is intended to be run as an individual user (not root, yet)
    * All ruby installation, configuration and source files are in ~/.rvm
    * To manually reset to defaults: "rm -f ~/.rvm/current", then open new shell
    * To preserve previous gem installations for a particular ruby version copy,
      move, symlink or copy the old gem directory to (1.8 for 1.8.X): 
      ~/.gem/$interpreter/$version

  Examples:

    $ gem install rvm             # Install the rvm gem
    $ rvm-install                 # Install rvm, adds hooks for bash & zsh
    $ rvm install jruby           # Install jRuby (default version is 1.3.1)
    $ rvm use ruby -v 1.9.1       # Use Ruby 1.9.1, installs if necessary
    $ rvm use 1.9                 # Equivalent to above, due to defaults
    $ rvm use 1.8                 # Use Ruby 1.8.6, installs if necessary
    $ rvm use default             # Use the system default (as if no rvm)
    $ rvm gemdup ~/.gem/ruby/1.8/ # Install gems from ~/.gem/ruby/1.8/
    $ rvm gemdir                  # Switch to gems directory for current ruby
    $ rvm gemdir system           # Switch to the system gems directory
    $ rvm gemdir system user      # Switch to the system user gems directory
    $ rvm gemdir ruby 1.9         # Switch to gems directory for ruby 1.9.1

  TODO: (in order)

    * rvm gemdup 
    * root support
    * Settings file, user overridable
    * Show current in rvm list, if applicable

  Credits:

    Bash Support Testing

      - Daniel Neighman (dneighman@gmail.com)
        irc: hassox    ; github: http://github.com/hassox

      - John Mettraux (jmettraux@openwfe.org)
        irc: jmettraux ; github: http://github.com/jmettraux
    
    ZSH Support Testing

      - Franco Lazzarino (flazzarino@gmail.com)
        irc: flazz     ; github: http://github.com/flazz