好的，我安装了 RVM。我测试使用：
type rvm | head -n1
输出：“rvm 是一个函数”。到现在为止还挺好。
然后我尝试了：
rvm install 1.8.7-p302
一切都很顺利，但随后：
$ ruby -v
The program 'ruby' is currently not installed. You can install it by typing:
sudo apt-get install ruby
RVM 说安装过程一切顺利...获取 RVM 信息它说：
$ rvm info
ruby-1.8.7-p302:
system:
uname: "Linux pi-ubuntu 2.6.32-24-generic-pae #43-Ubuntu SMP Thu Sep 16 15:30:27 UTC 2010 i686 GNU/Linux"
bash: "/bin/bash => GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)"
zsh: " => not installed"
rvm:
version: "rvm 1.0.11 by Wayne E. Seguin (wayneeseguin@gmail.com) [http://rvm.beginrescueend.com/]"
ruby:
interpreter: ""
version: ""
date: ""
platform: ""
patchlevel: ""
full_version: ""
homes:
gem: "/home/pi/.rvm/gems/ruby-1.8.7-p302"
ruby: "/home/pi/.rvm/rubies/ruby-1.8.7-p302"
binaries:
ruby: ""
irb: ""
gem: ""
rake: ""
environment:
PATH: "/home/pi/bin:/home/pi/Programs/ZendFramework-1.10.6/bin:/home/pi/Programs/apache-maven-2.2.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/pi/.rvm/bin:/home/pi/.rvm/bin"
GEM_HOME: "/home/pi/.rvm/gems/ruby-1.8.7-p302"
GEM_PATH: "/home/pi/.rvm/gems/ruby-1.8.7-p302:/home/pi/.rvm/gems/ruby-1.8.7-p302@global"
BUNDLE_PATH: "/home/pi/.rvm/gems/ruby-1.8.7-p302"
MY_RUBY_HOME: "/home/pi/.rvm/rubies/ruby-1.8.7-p302"
IRBRC: "/home/pi/.rvm/rubies/ruby-1.8.7-p302/.irbrc"
RUBYOPT: ""
gemset: ""
也尝试设置默认红宝石失败：
$ rvm 1.8.7 --default
ruby ruby-1.8.7-p302 is not installed.
'rvm install ruby-1.8.7-p302'
我该如何解决这个问题？任何帮助，将不胜感激。
多谢你们。rvm use ruby-1.8.7 说：警告：ruby ruby-1.8.7-p302 没有安装。要安装：'rvm install ruby-1.8.7-p302'
添加信息：
$ rvm list
rvm rubies
$ rvm use ruby-1.8.7
warn: ruby ruby-1.8.7-p302 is not installed.
To install do: 'rvm install ruby-1.8.7-p302'
关于我的 .profile，我没有使用它，而是使用了 . .bashrc。这是它的样子：
# If not running interactively, don't do anything
# [ -z "$PS1" ] && return
if [[ -n "$PS1" ]] ; then
#... all of the original content....
fi
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
好的，此时我尝试移动：
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
到我的 .profile。没运气。
我还重新安装了一个 ruby，再次一切顺利：
$ rvm install 1.8.7-p302
/home/pi/.rvm/rubies/ruby-1.8.7-p302, this may take a while depending on your cpu(s)...
ruby-1.8.7-p302 - #fetching
ruby-1.8.7-p302 - #downloading ruby-1.8.7-p302, this may take a while depending on your connection...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4086k 100 4086k 0 0 42600 0 0:01:38 0:01:38 --:--:-- 44324
ruby-1.8.7-p302 - #extracting ruby-1.8.7-p302 to /home/pi/.rvm/src/ruby-1.8.7-p302
ruby-1.8.7-p302 - #extracted to /home/pi/.rvm/src/ruby-1.8.7-p302
ruby-1.8.7-p302 - #configuring
ruby-1.8.7-p302 - #compiling
ruby-1.8.7-p302 - #installing
ruby-1.8.7-p302 - #rubygems installing to ruby-1.8.7-p302
Retrieving rubygems-1.3.7
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 284k 100 284k 0 0 25693 0 0:00:11 0:00:11 --:--:-- 61417
Extracting rubygems-1.3.7 ...
ruby-1.8.7-p302 - adjusting #shebangs for (gem).
ruby-1.8.7-p302 - #importing default gemsets (/home/pi/.rvm/gemsets/)
Install of ruby-1.8.7-p302 - #complete
但是再次做 ruby -v 说没有安装...
我错过了一些东西，但我无法弄清楚......