apt-get install vim安装不上怎么办？
vim安装不上的可能原因有：
权限不足
安装源里没有可用的包
vim-common的依赖问题
解决方法如下：
方法一：加上sudo来执行安装命令
sudo apt-get install vim
方法二：更换安装源
（1）在终端输入下面命令
sudo gedit /etc/apt/sources.list
该命令的作用是用gedit打开安装来源文件
（2）替换为下面内容
#deb包 deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse ##测试版源 deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse # 源码 deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse ##测试版源 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse # Canonical 合作伙伴和附加 deb http://archive.canonical.com/ubuntu/ xenial partner deb http://extras.ubuntu.com/ubuntu/ xenial main
（3）执行
sudo apt-get update sudo apt-get install vim
方法三：卸载依赖包
sudo apt-get remove vim-common sudo apt-get install vim
