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Preferred Applications

Use the Preferred Applications preference tool to specify the applications that you want the GNOME Desktop to use when the GNOME Desktop starts an application for you. For example, you can specify the web browser application (Epiphany , Mozilla Firefox, Opera ...) to launch when you click on a link in other applications such as email clients or document viewers.

Preferred Applications can be found by going to System ▸ Preferences ▸ Preferred Applications.

You can customize the preferences for the Preferred Applications preference tool in the following functional areas.

  • Internet (Web, Mail)
  • Multimedia (Multimedia Player)
  • System (Terminal)
  • Accessibility (Visual, Mobility)

For each preferred application category, a drop-down menu contains a list of possible applications you can choose from. The list depends on the applications installed on your computer.

In each category, the last item in the menu (Custom) permits you to customize the command used by the system when the specific launch action occurs.

8.1.3.1. Custom Command Options

The following table summarizes the various options you can choose from when you select Custom in the drop-down application menu.

Table 8-2Custom command options
Dialog Element Description
Command Enter the command to execute to start the custom application. For the Web Browser and the Mail Reader applications, you can include a %s after the command to tell the application to use the URL or Email address you clicked on. The exact command arguments may depend on the specific application.
Run in terminal Select this option to run the command in a terminal window. Select this option for an application that does not create a window in which to run.
Execute flag (Terminal only) Most terminal applications have an option that cause them to treat the remaining command line options as commands to run (-x for gnome-terminal). Enter this option here. For example, this is used when executing a command of a launcher for which the chosen type is Application in Terminal.
Run at start (Accessibility only) Select this option to run the command as soon as your session begins. For more accessibility options, see GNOME Desktop Accessibility Guide.