→ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  apg dnsmasq-base geoclue-ubuntu-geoip gnome-control-center-data
  gnome-online-accounts iputils-arping libnetfilter-conntrack3 libnl-3-200
  libnl-genl-3-200 libnl-route-3-200 libnm-glib-vpn1 libnm-gtk-common
  libnm-gtk0 libtimezonemap1 mobile-broadband-provider-info modemmanager
  mousetweaks network-manager network-manager-gnome network-manager-pptp
  network-manager-pptp-gnome pptp-linux thunderbird-globalmenu ubuntu-docs
  usb-modeswitch usb-modeswitch-data wpasupplicant
0 upgraded, 0 newly installed, 27 to remove and 160 not upgraded.
4 not fully installed or removed.
Need to get 0 B/12.0 kB of archives.
After this operation, 54.7 MB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 209020 files and directories currently installed.)
Preparing to replace ubuntu-system-service 0.2.2 (using .../ubuntu-system-service_0.2.2_all.deb) ...
/var/lib/dpkg/info/ubuntu-system-service.prerm: 6: /var/lib/dpkg/info/ubuntu-system-service.prerm: pyclean: not found
dpkg: warning: subprocess old pre-removal script returned error exit status 127
dpkg - trying script from the new package instead ...
/var/lib/dpkg/tmp.ci/prerm: 6: /var/lib/dpkg/tmp.ci/prerm: pyclean: not found
dpkg: error processing /var/cache/apt/archives/ubuntu-system-service_0.2.2_all.deb (--unpack):
 subprocess new pre-removal script returned error exit status 127
/var/lib/dpkg/info/ubuntu-system-service.postinst: 6: /var/lib/dpkg/info/ubuntu-system-service.postinst: pycompile: not found
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 /var/cache/apt/archives/ubuntu-system-service_0.2.2_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)