这是什么.
我先做了：
我先做了：
rvm get stable rvm install ruby-2.2.2
没有成交.它向我展示了以下内容：
$rvm install ruby-2.2.2 Searching for binary rubies,this might take some time. No binary rubies available for: ubuntu/14.04/i386/ruby-2.2.2. Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. Checking requirements for ubuntu. Requirements installation successful. Installing Ruby from source to: /home/myuser/.rvm/rubies/ruby-2.2.2,this may take a while depending on your cpu(s)... ruby-2.2.2 - #downloading ruby-2.2.2,this may take a while depending on your connection... % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- 0:00:19 --:--:-- 0Warning: Transient problem: timeout Will retry in 2 seconds. 3 retries left. 0 0 0 0 0 0 0 0 --:--:-- 0:00:19 --:--:-- 0Warning: Transient problem: timeout Will retry in 2 seconds. 2 retries left. 0 0 0 0 0 0 0 0 --:--:-- 0:00:19 --:--:-- 0Warning: Transient problem: timeout Will retry in 2 seconds. 1 retries left. 0 0 0 0 0 0 0 0 --:--:-- 0:00:19 --:--:-- 0curl: (6) Could not resolve host: cache.ruby-lang.org There was an error(6). Checking fallback: http://ftp.ruby-lang.org/pub/ruby/2.2/ruby-2.2.2.tar.bz2 Checking fallback: http://www.mirrorservice.org/sites/ftp.ruby-lang.org/pub/ruby/2.2/ruby-2.2.2.tar.bz2 No fallback URL could be found,try increasing timeout with: echo "export rvm_max_time_flag=20" >> ~/.rvmrc There has been an error fetching the ruby interpreter. Halting the installation.
我告诉你增加超时时间：
echo "export rvm_max_time_flag=20" >> ~/.rvmrc
但没有交易.我也做了rvm得到了头并且在更高的超时时间重新做了但是它仍然没有好处.
我该怎么做才能在ubuntu上正确安装ruby-2.2.2？
