E: Unable to locate package
作者：互联网
首先尝试更新apt-get
sudo apt-get upgrade
sudo apt-get update
不行的话，手动添加源
打开etc/apt/sources.list添加以下两行：
deb http://archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://archive.ubuntu.com/ubuntu/ trusty universe
标签：locate,sudo,trusty,get,package,apt,Unable,ubuntu,archive 来源： https://www.cnblogs.com/wangylblog/p/15516826.html