Ubuntu: how to restore packages after interrupted apt upgrade

Often you might stop running apt update && apt dist-upgrade.

Here is the one-line command that will resume reinstalling the unfinished, or half-configured packages for you. It creates list of packages which can be passed to apt install:  

grep  "08:18:.* half-configured"  /var/log/dpkg.log.1 /var/log/dpkg.log |  awk '{printf "%s ", $5}'

first part of the command will grab only half-configured packages, while the second part will grab just the package name.

Here is the command in full:

sudo apt install --reinstall $(grep  "08:18:.* half-configured"  /var/log/dpkg.log.1 /var/log/dpkg.log |  awk '{printf "%s ", $5}')

You can configure 08:18 with the time you know the packages were interrupted form installing.

Best luck!