我正在运行 Ubuntu 14.04。当我运行时：
sudo add-apt-repository ppa:ubuntu-wine/ppa
我收到以下错误：
sudo: add-apt-repository: command not found
我试着跑
sudo apt-get install software-properties-common
但它显示：
software-properties-common is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.