cracklib-runtime software package provides runtime support for password checker library cracklib2, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cracklib-runtime
cracklib-runtime is installed in your system.
Make ensure the cracklib-runtime package were installed using the commands given below,
$ sudo dpkg-query -l | grep cracklib-runtime *
You will get with cracklib-runtime package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Administration Utilities |
| Package | cracklib-runtime |
| Version | 2.9.2-1build2 |
| Description | runtime support for password checker library cracklib2 |
| Sub Section | admin |