Comment désinstaller rvm, ruby, rails et gemmes. Je reçois des erreurs sur Mavericks

Je suis nouveau sur Ruby on Rails et j'ai quelques problèmes avec la configuration. Je ne sais pas quoi faire. J'ai installé plusieurs fois ruby, rails et des pierres précieuses en raison de signaler les problèmes.
J'ai lu beaucoup de questions sur stack overflow, et rien pour les résoudre.
J'essaie maintenant de désinstaller tout et j'ai des erreurs quand je tente de supprimer des Joyaux, de :

- Je signaler des problèmes sur le terminal et je ne sais pas comment envoyer un log, etc..
C'est correct pour désinstaller:

Supprimer Les Gemmes: $ gem clean
-Désinstaller ruby: $ rvm uninstall ruby (#désinstaller tous les rubis installé?)
ou besoin de:
-Désinstaller la version:

$ rvm uninstall 2.1.0 

et d'autres de la version 2.0.0 et 2.1.1

-Désinstaller rvm:

$ rvm repair
$ rvm cleanup
$ rvm implode

et pour l'instant tout installer à nouveau!?

Quand j'essaie j'ai ceci:

MacBook-Pro-de-Romenig:~ romenig$ gem clean
Cleaning up installed gems...
Clean Up Complete
MacBook-Pro-de-Romenig:~ romenig$ cd ~
MacBook-Pro-de-Romenig:~ romenig$ ruby -v
ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]
MacBook-Pro-de-Romenig:~ romenig$ ruby lis
ruby: No such file or directory -- lis (LoadError)
MacBook-Pro-de-Romenig:~ romenig$ ruby list
ruby: No such file or directory -- list (LoadError)
MacBook-Pro-de-Romenig:~ romenig$ ruby list
ruby: No such file or directory -- list (LoadError)
MacBook-Pro-de-Romenig:~ romenig$ rvm ruby list
Please note that `rvm ruby ...` was removed, try `ruby list ` or `rvm all do ruby list ` instead. ( see: 'rvm usage' )
MacBook-Pro-de-Romenig:~ romenig$ gem list
*** LOCAL GEMS ***
bundler (1.5.3)
CFPropertyList (2.2.0)
libxml-ruby (2.6.0)
nokogiri (1.5.6)
sqlite3 (1.3.7)
MacBook-Pro-de-Romenig:~ romenig$ gem clean
Cleaning up installed gems...
Clean Up Complete
MacBook-Pro-de-Romenig:~ romenig$ rvm uninstall ruby
Please note that `rvm ruby ...` was removed, try `ruby  ` or `rvm all do ruby  ` instead. ( see: 'rvm usage' )
MacBook-Pro-de-Romenig:~ romenig$ rvm list
rvm rubies
ruby-2.0.0-p353 [ x86_64 ]
* ruby-2.1.0 [ x86_64 ]
ruby-2.1.1 [ missing bin/ruby ]
ruby-2.1.1-rails [ x86_64 ]
# => - current
# =* - current && default
#  * - default
MacBook-Pro-de-Romenig:~ romenig$ rvm all do uninstall ruby
You must be root to run this tool.
You must be root to run this tool.
You must be root to run this tool.
You must be root to run this tool.
MacBook-Pro-de-Romenig:~ romenig$ sudo rvm all do uninstall ruby
Password:
URL is not uninstallable: ruby
URL is not uninstallable: ruby
URL is not uninstallable: ruby
URL is not uninstallable: ruby
MacBook-Pro-de-Romenig:~ romenig$ rvm uninstall 2.1.0
ruby-2.1.0 - #removing rubies/ruby-2.1.0.......................................|
Error running '__rvm_rm_rf /Users/romenig/.rvm/rubies/ruby-2.1.0',
showing last 15 lines of /Users/romenig/.rvm/log/1395265139_ruby-2.1.0/remove.rubies.log
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0/gems/tzinfo-0.3.39/test/ts_all.rb: Permission denied
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0/gems/tzinfo-0.3.39/test: Permission denied
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0/gems/tzinfo-0.3.39/tzinfo.gemspec: Permission denied
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0/gems/tzinfo-0.3.39: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0/gems: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems/2.1.0: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby/gems: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib/ruby: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0/lib: Directory not empty
rm: /Users/romenig/.rvm/rubies/ruby-2.1.0: Directory not empty
++ typeset ret=1
++ rvm_debug '__rvm_rm_rf error removing target dir '\''/Users/romenig/.rvm/rubies/ruby-2.1.0'\''.'
++ ((  0  ))
++ return 0
++ return 1

Mon RMV INFO:

MacBook-Pro-de-Romenig:~ romenig$ rvm info
system:
system:
uname:       "Darwin MacBook-Pro-de-Romenig.local 13.1.0 Darwin Kernel Version 13.1.0: Thu Jan 16 19:40:37 PST 2014; root:xnu-2422.90.20~2/RELEASE_X86_64 x86_64"
system:      "osx/10.9/x86_64"
bash:        "/bin/bash => GNU bash, version 3.2.51(1)-release (x86_64-apple-darwin13)"
zsh:         "/bin/zsh => zsh 5.0.2 (x86_64-apple-darwin13.0)"
rvm:
version:      "rvm 1.25.20 (master) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]"
updated:      "3 hours 21 minutes 47 seconds ago"
path:         "/Users/romenig/.rvm"
homes:
gem:          "not set"
ruby:         "not set"
binaries:
ruby:         "/usr/bin/ruby"
irb:          "/usr/bin/irb"
gem:          "/usr/bin/gem"
rake:         "/usr/bin/rake"
environment:
PATH:         "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/mysql/bin:/Users/romenig/.rvm/bin"
GEM_HOME:     ""
GEM_PATH:     ""
MY_RUBY_HOME: ""
IRBRC:        ""
RUBYOPT:      ""
gemset:       ""
$ gem list
*** LOCAL GEMS ***
bundler (1.5.3)
CFPropertyList (2.2.0)
libxml-ruby (2.6.0)
nokogiri (1.5.6)
sqlite3 (1.3.7)
rvm gemset list
gemsets for system (found in /Users/romenig/.rvm/gems/system)
=> (default)
*

source d'informationauteur rld