红宝石安装与RVM

Question

➜ TestApps git:(master) ✗ rvm install 2.1.3 
Warning, new version of rvm available '1.25.31', you are using older version '1.25.28'. 
You can disable this warning with: echo rvm_autoupdate_flag=0 >> ~/.rvmrc 
You can enable auto-update with: echo rvm_autoupdate_flag=2 >> ~/.rvmrc 
Unknown ruby string (do not know how to handle): ruby-2.1.3. 
Unknown ruby string (do not know how to handle): ruby-2.1.3. 
Searching for binary rubies, this might take some time. 
No binary rubies available for: ubuntu/12.04/i386/ruby-2.1.3. 
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. 
Checking requirements for ubuntu. 
Requirements installation successful. 
Unknown ruby string (do not know how to handle): ruby-2.1.3. 
Installing Ruby from source to: /home/test-user/.rvm/rubies/ruby-2.1.3, this may take a while depending on your cpu(s)... 
Unknown ruby string (do not know how to handle): ruby-2.1.3. 
ruby-2.1.3 - #downloading ruby-2.1.3, 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   11.4M   100 11.4M   0   0   63269   0 0:03:09 0:03:09 --:--:-- 43967 
No checksum for downloaded archive, recording checksum in user configuration. 
ruby-2.1.3 - #extracting ruby-2.1.3 to /home/test-user/.rvm/src/ruby-2.1.3 - please wait 
ruby-2.1.3 - #configuring - please wait 
ruby-2.1.3 - #post-configuration - please wait 
ruby-2.1.3 - #compiling - please wait 

为什么rvm安装说明这些下面几行：
警告，RVM提供新版本的“31年1月25日”，使用的是旧版本的“28年1月25日”。
您可以禁用此警告：回声rvm_autoupdate_flag = 0〜>>/.rvmrc
您可以启用自动更新：回声rvm_autoupdate_flag = 2 >>〜/ .rvmrc
未知红宝石字符串（不知道如何句柄）：ruby-2.1.3。
未知的ruby字符串（不知道如何处理）：ruby-2.1.3。

我错过了什么吗？

Answer 1

这是一个建议，有更新版本的RVM可用。你可以升级

$ rvm get latest