ristretto software package provides lightweight picture-viewer for the Xfce desktop environment, 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 ristretto
ristretto is installed in your system.
Make ensure the ristretto package were installed using the commands given below,
$ sudo dpkg-query -l | grep ristretto *
You will get with ristretto package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Graphics |
| Package | ristretto |
| Version | 0.6.3-2ubuntu1 |
| Description | lightweight picture-viewer for the Xfce desktop environment |
| Sub Section | Graphics |