libinternals-perl software package provides Perl module for write-protecting variables and manipulating refcounts, 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 libinternals-perl
libinternals-perl is installed in your system.
Make ensure the libinternals-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libinternals-perl *
You will get with libinternals-perl package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Perl |
| Package | libinternals-perl |
| Version | 1.1-2build2 |
| Description | Perl module for write-protecting variables and manipulating refcounts |
| Sub Section | Perl |