$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED:
systemd-shim
The following packages will be upgraded:
apache2 apache2-bin apache2-data apache2-utils libmspack0 linux-firmware
6 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/72.5 MB of archives.
After this operation, 4,250 kB of additional disk space will be used.
Do you want to continue? [Y/n]
(Reading database ... 415046 files and directories currently installed.)
Removing systemd-shim (9-1bzr4ubuntu1) ...
Removing 'diversion of /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service to /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd by systemd-shim'
dpkg-divert: error: rename involves overwriting '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service' with
different file '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd', not allowed
dpkg: error processing package systemd-shim (--remove):
installed systemd-shim package post-removal script subprocess returned error exit status 2
Errors were encountered while processing:
systemd-shim
E: Sub-process /usr/bin/dpkg returned an error code (1)
对于大多数用户来说到这里就完事了。但是对于系统管理员来说，每次打开终端的时候发现还有一个"longsky's Macbook Pro"的东东在那里还是感觉很不爽。估计这个想改的人少，笔者费了九牛二虎之力才在mac的一个论坛的不起眼的小角落翻出来修改它的命令：