pythia8-root-interface software package provides Interfaces to call ROOT functions in PYTHIA8 code, 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 pythia8-root-interface
pythia8-root-interface is installed in your system.
Make ensure the pythia8-root-interface package were installed using the commands given below,
$ sudo dpkg-query -l | grep pythia8-root-interface *
You will get with pythia8-root-interface package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | pythia8-root-interface |
| Version | 8.1.80-1 |
| Description | Interfaces to call ROOT functions in PYTHIA8 code |
| Sub Section | devel |