Change Default Linux/Unix Image Viewer Application

Over the course of time using a GNU/Linux or Unix operating system there will come a time when the default associated application needs to be changed. This change can happen out of personal preference to use a certain application or out of undesired association due to a software installation or update. File association is generally achieved in a couple of ways depending on the environment, graphical user interface (GUI) or command line. In this particular circumstance there is no way to set a default image viewer application for the command line interface (CLI) therefore I will focus on how to make this change in a graphical desktop environment. Default applications can be changed through desktop environment settings, a file manager application or using the command line interface. Since they are numerous desktop environments and files managers this complete guide of instructions will cover some of the most popular options available. File Association Application to file association is…