redshift software package provides Adjusts the color temperature of your screen, 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 redshift
redshift is installed in your system.
Make ensure the redshift package were installed using the commands given below,
$ sudo dpkg-query -l | grep redshift *
You will get with redshift package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | redshift |
| Version | 1.8-0ubuntu6 |
| Description | Adjusts the color temperature of your screen |
| Sub Section | x11 |