紅寶石安裝與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 

爲什麼rvm安裝說明這些下面幾行：
警告，RVM提供新版本的「31年1月25日」，使用的是舊版本的「28年1月25日」。
您可以禁用此警告：回聲rvm_autoupdate_flag = 0〜>>/.rvmrc
您可以啓用自動更新：回聲rvm_autoupdate_flag = 2 >>〜/ .rvmrc
未知紅寶石字符串（不知道如何句柄）：ruby-2.1.3。
未知的ruby字符串（不知道如何處理）：ruby-2.1.3。

我錯過了什麼嗎？

Answer 1

這是一個建議，有更新版本的RVM可用。你可以升級

$ rvm get latest