我只是在做定期更新：
~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Setting up snapd (2.14.2~16.04) ...
我不得不杀死 dpkg 进程。然后在 apt-get update dpkg 显示消息后：
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' …