Dpkg --configure -a

apt upgrade
E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem.

dpkg --configure -a
Setting up man-db (2.8.3-2ubuntu0.1) ...
Building database of manual pages ...

 dpkg --configure -a
Setting up libnss-systemd:amd64 (237-3ubuntu10.42) ...
Setting up kmod (24-1ubuntu3.5) ...
Installing new version of config file /etc/modprobe.d/blacklist-framebuffer.conf ...
Setting up systemd-sysv (237-3ubuntu10.42) ...
Setting up mount (2.31.1-0.4ubuntu3.6) ...
Setting up udev (237-3ubuntu10.42) ...
update-initramfs: deferring update (trigger activated)
dpkg: dependency problems prevent configuration of python3.6-dev:
 python3.6-dev depends on python3.6 (= 3.6.9-1~18.04ubuntu1.1); however:
  Version of python3.6 on system is 3.6.9-1~18.04ubuntu1.
 python3.6-dev depends on libpython3.6-dev (= 3.6.9-1~18.04ubuntu1.1); however:
  Package libpython3.6-dev:amd64 is not installed.
 python3.6-dev depends on libpython3.6 (= 3.6.9-1~18.04ubuntu1.1); however:
  Version of libpython3.6:amd64 on system is 3.6.9-1~18.04ubuntu1.

dpkg: error processing package python3.6-dev (--configure):
 dependency problems - leaving unconfigured
Setting up libpam-systemd:amd64 (237-3ubuntu10.42) ...
Processing triggers for ureadahead (0.100.0-21) ...
Processing triggers for install-info (6.5.0.dfsg.1-2) ...
Processing triggers for plymouth-theme-ubuntu-text (0.9.3-1ubuntu7.18.04.2) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for libc-bin (2.27-3ubuntu1.2) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for dbus (1.12.2-1ubuntu1.2) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for initramfs-tools (0.130ubuntu3.9) ...
.../...

Related terms

• dpkg-reconfigure

See also

• dpkg, dpkg-query, update-alternatives, ar, debsums, dpkg -V, dpkg -S, dpkg -L, dpkg --configure -a, wajig, dpkg -i -E , dpkg --help, dpkg-source-gitarchive

https://linux.die.net/man/8/update-alternatives