当我尝试在终端上使用 ruby 时，没有任何反应。最后几天我用过它，一切正常，但现在不行了。我安装了 rvm 和 1.9.3 版本的 ruby。当我使用 启动脚本时它可以工作ruby myscript.rb，并且我尝试安装 rails 但是当我输入时gem install rails出现错误：
/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/bin/gem:4: warning: Insecure world writable dir /Users/romainberger/.rvm/gems/ruby-1.9.3-p194 in PATH, mode 040777
由于没有输出，我不知道问题出在哪里。有人有想法吗？
谢谢
编辑：
rvm info
ruby-1.9.3-p194:
system:
uname: "Darwin romain.home 11.3.0 Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64 x86_64"
bash: "/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11)"
zsh: "/bin/zsh => zsh 4.3.11 (i386-apple-darwin11.0)"
rvm:
version: "rvm 1.14.1 (master) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
updated: "1 day 11 hours 59 minutes 3 seconds ago"
ruby:
interpreter: "ruby"
version: "1.9.3p194"
date: "2012-04-20"
platform: "x86_64-darwin11.3.0"
patchlevel: "2012-04-20 revision 35410"
full_version: "ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.3.0]"
homes:
gem: "/Users/romainberger/.rvm/gems/ruby-1.9.3-p194"
ruby: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194"
binaries:
ruby: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/bin/ruby"
irb: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/bin/irb"
gem: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/bin/gem"
rake: "/Users/romainberger/.rvm/gems/ruby-1.9.3-p194@global/bin/rake"
environment:
PATH: "/Users/romainberger/.rvm/gems/ruby-1.9.3-p194/bin:/Users/romainberger/.rvm/gems/ruby-1.9.3-p194@global/bin:/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/bin:/Users/romainberger/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/git/bin"
GEM_HOME: "/Users/romainberger/.rvm/gems/ruby-1.9.3-p194"
GEM_PATH: "/Users/romainberger/.rvm/gems/ruby-1.9.3-p194:/Users/romainberger/.rvm/gems/ruby-1.9.3-p194@global"
MY_RUBY_HOME: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194"
IRBRC: "/Users/romainberger/.rvm/rubies/ruby-1.9.3-p194/.irbrc"
RUBYOPT: ""
gemset: ""
gem info给我：
ERROR: While executing gem ... (RuntimeError)
Unknown command info
要启动 ruby，我只需键入ruby