ubuntu使用yum命令時報錯解決方法：there are no enabled repos

There are no enabled repos.
 Run "yum repolist all" to see the repos you have.
 You can enable repos with yum-config-manager --enable <repo>

原因ubuntu14.0 不支持yum下載按裝機制 
正確的命令是：
sudo apt-get install openssl
sudo apt-get install libssl-dev