编辑sources.list
sudo vim /etc/apt/sources.list
//在最后一行添加
deb http://archive.ubuntu.com/ubuntu/ trusty main universe restricted multiverse
:wq! 保存退出,然后执行如下更新
sudo apt-get update
sudo vim /etc/apt/sources.list
//在最后一行添加
deb http://archive.ubuntu.com/ubuntu/ trusty main universe restricted multiverse
:wq! 保存退出,然后执行如下更新
sudo apt-get update