libxml-commonns-perl software package provides list of commonly used XML namespaces, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libxml-commonns-perl
libxml-commonns-perl is installed in your system.
Make ensure the libxml-commonns-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libxml-commonns-perl *
You will get with libxml-commonns-perl package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Perl |
| Package | libxml-commonns-perl |
| Version | 0.06-2 |
| Description | list of commonly used XML namespaces |
| Sub Section | Perl |