psi-plus-l10n software package provides localization files for Psi+, 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 psi-plus-l10n
psi-plus-l10n is installed in your system.
Make ensure the psi-plus-l10n package were installed using the commands given below,
$ sudo dpkg-query -l | grep psi-plus-l10n *
You will get with psi-plus-l10n package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Language packs |
| Package | psi-plus-l10n |
| Version | 0.16.268-1 |
| Description | localization files for Psi+ |
| Sub Section | localization |