unable to convert "\xA0" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/d8, skipping

Coy — Mon, 25 Feb 2013 21:01:40 +0800

$ gem install ref libv8 therubyracer
Fetching: ref-1.0.2.gem (100%)
Successfully installed ref-1.0.2
Installing ri documentation for ref-1.0.2
Done installing documentation for ref (0 sec).
Fetching: libv8-3.11.8.13.gem (100%)
Building native extensions.  This could take a while...
Successfully installed libv8-3.11.8.13
unable to convert "\x90" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/process, skipping
unable to convert "\xC0" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/mksnapshot, skipping
unable to convert "\xC0" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/lineprocessor, skipping
unable to convert "\xA0" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/d8, skipping
unable to convert "\xF8" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/cctest, skipping
unable to convert "\xEC" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/preparser, skipping
unable to convert "\xA0" from ASCII-8BIT to UTF-8 for vendor/v8/out/x64.release/shell, skipping
Installing ri documentation for libv8-3.11.8.13
Done installing documentation for libv8 (100 sec).
Fetching: therubyracer-0.11.3.gem (100%)
Building native extensions.  This could take a while...
Successfully installed therubyracer-0.11.3
Installing ri documentation for therubyracer-0.11.3
Done installing documentation for therubyracer (0 sec).
3 gems installed

新手启动这个服务，有这个警告，跳过了，不知道对后面有影响没？

rails 旧版，如何升级到新版尼

Coy — Mon, 25 Feb 2013 13:11:14 +0800

ruby 已经升级到了 2.0

$ ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-linux]
$ gem update rails --include-dependencies
ERROR:  While executing gem ... (OptionParser::InvalidOption)
    invalid option: --include-dependencies
$ gem update rails 
Updating installed gems
Nothing to update
$ gem update rails bundler
Updating installed gems
Nothing to update
$ gem -v
2.0.0.rc.2
$ rails -v
程序“rails”尚未安装。  您可以使用以下命令安装：
sudo apt-get install rails

昨天刚刚安装的 rails 环境，还没来得及学习，就出了新版。现在想直接升级到 ruby2.0 rails4 上去入门。

但是环境没弄好。

昨天安装的时候，参考的 http://ruby-china.org/wiki/install_ruby_guide

今天升级的时候还执行了。一个这个

PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting  
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"  # This loads RVM