Waiting for cache lock

找出哪个进程锁定了文件

sudo lsof /var/lib/dpkg/lock
or 
sudo lsof /var/lib/apt/lists/lock
or
sudo lsof /var/lib/dpkg/lock-frontend

实例：

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
xxxxxx 5383 root 7aC REG 6,3 0 210001 /var/lib/dpkg/lock-frontend

上面PID：5383就是进程代号。

终止进程

sudo kill -9 5383

删除/删除锁定文件

sudo rm /var/lib/dpkg/lock
or
sudo rm /var/lib/apt/lists/lock
or
sudo rm /var/lib/dpkg/lock-frontend //Run this in your case

从缓存文件夹中删除锁定

sudo rm /var/cache/apt/archives/lock

检查并更正被中断的dpkg进程(如果有的话)(因此，我们最终不会遇到损坏的软件包)

sudo dpkg --configure -a