ruby-on-rails - 似乎无法安装 "use"RVM Ruby

Question

当我尝试调用 rails、rails -v 或 rails -c 时出现此错误:

/usr/lib/ruby/site_ruby/1.8/rubygems.rb:779:in `report_activate_error': Could not find RubyGem rails (>= 0) (Gem::LoadError)
    from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:214:in `activate'
    from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `gem'
    from /usr/bin/rails:18

我安装了 RVM，用它来安装 Ruby 1.9.3，然后切换到它 rvm use 1.9.3 --default。

当我 ruby -v 时:

ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]

我还 gem install rails --no-rdoc --no-ri 并检查了...ls ~/ruby/gems/gems/:

actionmailer-3.2.8/    journey-1.0.4/     rake-0.9.2.2/
actionpack-3.2.8/      json-1.7.5/        rdoc-3.12/
activemodel-3.2.8/     mail-2.4.4/        rubygems-bundler-1.0.7/
activerecord-3.2.8/    mime-types-1.19/   rvm-1.11.3.5/
activeresource-3.2.8/  multi_json-1.3.6/  sprockets-2.1.3/
activesupport-3.2.8/   polyglot-0.3.3/    sprockets-2.4.5/
arel-3.0.2/            rack-1.4.1/        thor-0.16.0/
builder-3.0.0/         rack-cache-1.2/    tilt-1.3.3/
bundler-1.1.5/         rack-ssl-1.3.2/    treetop-1.4.10/
erubis-2.7.0/          rack-test-0.6.1/   tzinfo-0.3.33/
hike-1.2.1/            rails-3.2.8/
i18n-0.6.0/            railties-3.2.8/

如果我 echo $GEM_PATH:

/home/flackend/.rvm/gems/ruby-1.9.3-p194:/home/flackend/.rvm/gems/ruby-1.9.3-p194@global

echo $PATH:

/home/flackend/.rvm/gems/ruby-1.9.3-p194/bin:/home/flackend/.rvm/gems/ruby-1.9.3-p194@global/bin:/home/flackend/.rvm/rubies/ruby-1.9.3-p194/bin:/home/flackend/.rvm/bin:/usr/local/jdk/bin:/home/flackend/perl5/bin:/usr/kerberos/bin:/usr/lib/courier-imap/bin:/usr/lib64/ccache:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/X11R6/bin:/home/flackend/.rvm/bin:/home/flackend/bin

cat ~/.bashrc:

# .bashrc

# Source global definitions
if [ -f /etc/bashrc ]; then
    . /etc/bashrc
fi

# User specific aliases and functions

PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting

cat ~/.bash_profile:

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

所以某个地方有一条路径，上面写着查看系统 Ruby 安装。有任何想法吗？谢谢!

---

编辑

好的，另外，如果我切换回系统 Ruby，rvm 使用系统，和 rails -v，我得到:

Rails 2.3.8

所以我完全不知道这个错误表明什么。

Answer 1

您还没有完成 rvm 安装。您需要在 .bashrc 中通过命令在/usr/bin 之前添加 ~/.rvm bin 路径:

[[ -s "/Users/pftg/.rvm/scripts/rvm" ]] && source "/Users/pftg/.rvm/scripts/rvm".

要测试，只需检查 $PATH 环境。应该类似于:

/.../.rvm/gems/ruby-1.9.3-p125@global/bin:/.../.rvm/rubies/ruby-1.9.3-p125/bin:/.../.rvm/bin:/usr/local/bin